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A005237 Numbers n such that n and n+1 have same number of divisors.
(Formerly M2068)
+0
17
2, 14, 21, 26, 33, 34, 38, 44, 57, 75, 85, 86, 93, 94, 98, 104, 116, 118, 122, 133, 135, 141, 142, 145, 147, 158, 171, 177, 189, 201, 202, 205, 213, 214, 217, 218, 230, 231, 242, 243, 244, 253, 285, 296, 298, 301, 302, 326, 332, 334, 344, 374, 375, 381, 387 (list; graph; listen)
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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.


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