>	P:=365!/((365-n)!*365^n):

 

>	seq(printf("n = %3d, P = %.5g\n",i,eval(P, n=i)), i=1..365);

 

n =   1, P = 1
n =   2, P = 0.99726
n =   3, P = 0.9918
n =   4, P = 0.98364
n =   5, P = 0.97286
n =   6, P = 0.95954
n =   7, P = 0.94376
n =   8, P = 0.92566
n =   9, P = 0.90538
n =  10, P = 0.88305
n =  11, P = 0.85886
n =  12, P = 0.83298
n =  13, P = 0.80559
n =  14, P = 0.7769
n =  15, P = 0.7471
n =  16, P = 0.7164
n =  17, P = 0.68499
n =  18, P = 0.65309
n =  19, P = 0.62088
n =  20, P = 0.58856
n =  21, P = 0.55631
n =  22, P = 0.5243
n =  23, P = 0.4927
n =  24, P = 0.46166
n =  25, P = 0.4313
n =  26, P = 0.40176
n =  27, P = 0.37314
n =  28, P = 0.34554
n =  29, P = 0.31903
n =  30, P = 0.29368
n =  31, P = 0.26955
n =  32, P = 0.24665
n =  33, P = 0.22503
n =  34, P = 0.20468
n =  35, P = 0.18562
n =  36, P = 0.16782
n =  37, P = 0.15127
n =  38, P = 0.13593
n =  39, P = 0.12178
n =  40, P = 0.10877
n =  41, P = 0.096848
n =  42, P = 0.08597
n =  43, P = 0.076077
n =  44, P = 0.067115
n =  45, P = 0.059024
n =  46, P = 0.051747
n =  47, P = 0.045226
n =  48, P = 0.039402
n =  49, P = 0.03422
n =  50, P = 0.029626
n =  51, P = 0.025568
n =  52, P = 0.021995
n =  53, P = 0.018862
n =  54, P = 0.016123
n =  55, P = 0.013738
n =  56, P = 0.011668
n =  57, P = 0.0098775
n =  58, P = 0.008335
n =  59, P = 0.0070106
n =  60, P = 0.0058773
n =  61, P = 0.0049112
n =  62, P = 0.0040904
n =  63, P = 0.0033956
n =  64, P = 0.0028095
n =  65, P = 0.0023169
n =  66, P = 0.0019043
n =  67, P = 0.00156
n =  68, P = 0.0012736
n =  69, P = 0.0010363
n =  70, P = 0.00084042
n =  71, P = 0.00067925
n =  72, P = 0.00054712
n =  73, P = 0.00043919
n =  74, P = 0.00035136
n =  75, P = 0.00028012
n =  76, P = 0.00022256
n =  77, P = 0.00017622
n =  78, P = 0.00013905
n =  79, P = 0.00010933
n =  80, P = 8.5668e-05
n =  81, P = 6.6891e-05
n =  82, P = 5.2047e-05
n =  83, P = 4.0354e-05
n =  84, P = 3.1178e-05
n =  85, P = 2.4003e-05
n =  86, P = 1.8413e-05
n =  87, P = 1.4075e-05
n =  88, P = 1.0720e-05
n =  89, P = 8.1353e-06
n =  90, P = 6.1516e-06
n =  91, P = 4.6348e-06
n =  92, P = 3.4793e-06
n =  93, P = 2.6023e-06
n =  94, P = 1.9393e-06
n =  95, P = 1.4398e-06
n =  96, P = 1.0651e-06
n =  97, P = 7.8495e-07
n =  98, P = 5.7635e-07
n =  99, P = 4.2160e-07
n = 100, P = 3.0725e-07
n = 101, P = 2.2307e-07
n = 102, P = 1.6134e-07
n = 103, P = 1.1626e-07
n = 104, P = 8.3450e-08
n = 105, P = 5.9672e-08
n = 106, P = 4.2506e-08
n = 107, P = 3.0162e-08
n = 108, P = 2.1320e-08
n = 109, P = 1.5012e-08
n = 110, P = 1.0529e-08
n = 111, P = 7.3557e-09
n = 112, P = 5.1187e-09
n = 113, P = 3.5481e-09
n = 114, P = 2.4496e-09
n = 115, P = 1.6845e-09
n = 116, P = 1.1538e-09
n = 117, P = 7.8711e-10
n = 118, P = 5.3480e-10
n = 119, P = 3.6191e-10
n = 120, P = 2.4391e-10
n = 121, P = 1.6372e-10
n = 122, P = 1.0945e-10
n = 123, P = 7.2865e-11
n = 124, P = 4.8311e-11
n = 125, P = 3.1898e-11
n = 126, P = 2.0974e-11
n = 127, P = 1.3734e-11
n = 128, P = 8.9552e-12
n = 129, P = 5.8148e-12
n = 130, P = 3.7597e-12
n = 131, P = 2.4206e-12
n = 132, P = 1.5518e-12
n = 133, P = 9.9063e-13
n = 134, P = 6.2966e-13
n = 135, P = 3.9850e-13
n = 136, P = 2.5111e-13
n = 137, P = 1.5754e-13
n = 138, P = 9.8411e-14
n = 139, P = 6.1204e-14
n = 140, P = 3.7896e-14
n = 141, P = 2.3361e-14
n = 142, P = 1.4336e-14
n = 143, P = 8.7589e-15
n = 144, P = 5.3273e-15
n = 145, P = 3.2256e-15
n = 146, P = 1.9442e-15
n = 147, P = 1.1665e-15
n = 148, P = 6.9671e-16
n = 149, P = 4.1421e-16
n = 150, P = 2.4512e-16
n = 151, P = 1.4439e-16
n = 152, P = 8.4654e-17
n = 153, P = 4.9401e-17
n = 154, P = 2.8693e-17
n = 155, P = 1.6587e-17
n = 156, P = 9.5432e-18
n = 157, P = 5.4645e-18
n = 158, P = 3.1140e-18
n = 159, P = 1.7660e-18
n = 160, P = 9.9671e-19
n = 161, P = 5.5980e-19
n = 162, P = 3.1287e-19
n = 163, P = 1.7401e-19
n = 164, P = 9.6301e-20
n = 165, P = 5.3031e-20
n = 166, P = 2.9058e-20
n = 167, P = 1.5843e-20
n = 168, P = 8.5942e-21
n = 169, P = 4.6385e-21
n = 170, P = 2.4908e-21
n = 171, P = 1.3307e-21
n = 172, P = 7.0728e-22
n = 173, P = 3.7399e-22
n = 174, P = 1.9673e-22
n = 175, P = 1.0294e-22
n = 176, P = 5.3588e-23
n = 177, P = 2.7748e-23
n = 178, P = 1.4292e-23
n = 179, P = 7.3223e-24
n = 180, P = 3.7314e-24
n = 181, P = 1.8912e-24
n = 182, P = 9.5339e-25
n = 183, P = 4.7800e-25
n = 184, P = 2.3835e-25
n = 185, P = 1.1819e-25
n = 186, P = 5.8287e-26
n = 187, P = 2.8585e-26
n = 188, P = 1.3940e-26
n = 189, P = 6.7599e-27
n = 190, P = 3.2596e-27
n = 191, P = 1.5628e-27
n = 192, P = 7.4501e-28
n = 193, P = 3.5311e-28
n = 194, P = 1.6640e-28
n = 195, P = 7.7957e-29
n = 196, P = 3.6309e-29
n = 197, P = 1.6811e-29
n = 198, P = 7.7379e-30
n = 199, P = 3.5403e-30
n = 200, P = 1.6101e-30
n = 201, P = 7.2786e-31
n = 202, P = 3.2704e-31
n = 203, P = 1.4605e-31
n = 204, P = 6.4821e-32
n = 205, P = 2.8592e-32
n = 206, P = 1.2534e-32
n = 207, P = 5.4599e-33
n = 208, P = 2.3635e-33
n = 209, P = 1.0166e-33
n = 210, P = 4.3450e-34
n = 211, P = 1.8451e-34
n = 212, P = 7.7849e-35
n = 213, P = 3.2633e-35
n = 214, P = 1.3589e-35
n = 215, P = 5.6219e-36
n = 216, P = 2.3104e-36
n = 217, P = 9.4314e-37
n = 218, P = 3.8243e-37
n = 219, P = 1.5402e-37
n = 220, P = 6.1607e-38
n = 221, P = 2.4474e-38
n = 222, P = 9.6555e-39
n = 223, P = 3.7828e-39
n = 224, P = 1.4717e-39
n = 225, P = 5.6851e-40
n = 226, P = 2.1806e-40
n = 227, P = 8.3042e-41
n = 228, P = 3.1397e-41
n = 229, P = 1.1785e-41
n = 230, P = 4.3909e-42
n = 231, P = 1.6240e-42
n = 232, P = 5.9623e-43
n = 233, P = 2.1725e-43
n = 234, P = 7.8569e-44
n = 235, P = 2.8199e-44
n = 236, P = 1.0043e-44
n = 237, P = 3.5496e-45
n = 238, P = 1.2448e-45
n = 239, P = 4.3312e-46
n = 240, P = 1.4951e-46
n = 241, P = 5.1203e-47
n = 242, P = 1.7395e-47
n = 243, P = 5.8619e-48
n = 244, P = 1.9593e-48
n = 245, P = 6.4953e-49
n = 246, P = 2.1354e-49
n = 247, P = 6.9621e-50
n = 248, P = 2.2508e-50
n = 249, P = 7.2148e-51
n = 250, P = 2.2929e-51
n = 251, P = 7.2243e-52
n = 252, P = 2.2563e-52
n = 253, P = 6.9854e-53
n = 254, P = 2.1435e-53
n = 255, P = 6.5185e-54
n = 256, P = 1.9645e-54
n = 257, P = 5.8665e-55
n = 258, P = 1.7358e-55
n = 259, P = 5.0886e-56
n = 260, P = 1.4778e-56
n = 261, P = 4.2512e-57
n = 262, P = 1.2113e-57
n = 263, P = 3.4182e-58
n = 264, P = 9.5522e-59
n = 265, P = 2.6432e-59
n = 266, P = 7.2417e-60
n = 267, P = 1.9642e-60
n = 268, P = 5.2737e-61
n = 269, P = 1.4015e-61
n = 270, P = 3.6861e-62
n = 271, P = 9.5941e-63
n = 272, P = 2.4708e-63
n = 273, P = 6.2955e-64
n = 274, P = 1.5868e-64
n = 275, P = 3.9561e-65
n = 276, P = 9.7549e-66
n = 277, P = 2.3786e-66
n = 278, P = 5.7347e-67
n = 279, P = 1.3669e-67
n = 280, P = 3.2206e-68
n = 281, P = 7.5001e-69
n = 282, P = 1.7260e-69
n = 283, P = 3.9250e-70
n = 284, P = 8.8178e-71
n = 285, P = 1.9568e-71
n = 286, P = 4.2889e-72
n = 287, P = 9.2829e-73
n = 288, P = 1.9837e-73
n = 289, P = 4.1849e-74
n = 290, P = 8.7137e-75
n = 291, P = 1.7905e-75
n = 292, P = 3.6300e-76
n = 293, P = 7.2601e-77
n = 294, P = 1.4321e-77
n = 295, P = 2.7858e-78
n = 296, P = 5.3426e-79
n = 297, P = 1.0100e-79
n = 298, P = 1.8816e-80
n = 299, P = 3.4539e-81
n = 300, P = 6.2453e-82
n = 301, P = 1.1122e-82
n = 302, P = 1.9501e-83
n = 303, P = 3.3660e-84
n = 304, P = 5.7175e-85
n = 305, P = 9.5554e-86
n = 306, P = 1.5707e-86
n = 307, P = 2.5390e-87
n = 308, P = 4.0346e-88
n = 309, P = 6.3006e-89
n = 310, P = 9.6667e-90
n = 311, P = 1.4566e-90
n = 312, P = 2.1550e-91
n = 313, P = 3.1292e-92
n = 314, P = 4.4580e-93
n = 315, P = 6.2290e-94
n = 316, P = 8.5329e-95
n = 317, P = 1.1455e-95
n = 318, P = 1.5064e-96
n = 319, P = 1.9398e-97
n = 320, P = 2.4446e-98
n = 321, P = 3.0140e-99
n = 322, P = 3.6333e-100
n = 323, P = 4.2803e-101
n = 324, P = 4.9252e-102
n = 325, P = 5.5325e-103
n = 326, P = 6.0630e-104
n = 327, P = 6.4783e-105
n = 328, P = 6.7445e-106
n = 329, P = 6.8369e-107
n = 330, P = 6.7432e-108
n = 331, P = 6.4661e-109
n = 332, P = 6.0232e-110
n = 333, P = 5.4456e-111
n = 334, P = 4.7743e-112
n = 335, P = 4.0549e-113
n = 336, P = 3.3328e-114
n = 337, P = 2.6479e-115
n = 338, P = 2.0313e-116
n = 339, P = 1.5026e-117
n = 340, P = 1.0703e-118
n = 341, P = 7.3312e-120
n = 342, P = 4.8205e-121
n = 343, P = 3.0376e-122
n = 344, P = 1.8309e-123
n = 345, P = 1.0534e-124
n = 346, P = 5.7719e-126
n = 347, P = 3.0046e-127
n = 348, P = 1.4817e-128
n = 349, P = 6.9011e-130
n = 350, P = 3.0251e-131
n = 351, P = 1.2432e-132
n = 352, P = 4.7684e-134
n = 353, P = 1.6983e-135
n = 354, P = 5.5836e-137
n = 355, P = 1.6827e-138
n = 356, P = 4.6102e-140
n = 357, P = 1.1368e-141
n = 358, P = 2.4915e-143
n = 359, P = 4.7783e-145
n = 360, P = 7.8548e-147
n = 361, P = 1.0760e-148
n = 362, P = 1.1792e-150
n = 363, P = 9.6918e-153
n = 364, P = 5.3106e-155
n = 365, P = 1.4550e-157