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A020497 a(n) is the minimal y such that n primes occur infinitely often among (x+1, ..., x+y), i.e. pi(x+y)-pi(x) >= n for infinitely many x. +0
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1, 3, 7, 9, 13, 17, 21, 27, 31, 33, 37, 43, 49, 51, 57, 61, 67, 71, 77, 81, 85, 91, 95, 101, 111, 115, 121, 127, 131, 137, 141, 147, 153, 157, 159, 163, 169, 177, 183, 187, 189, 197, 201, 211, 213, 217, 227, 237, 241, 247, 253, 255, 265, 271, 273, 279, 283, 289, 301, 305 (list; graph; listen)
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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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