id:A092682 - OEIS Search Results

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Least number 2k such that p^3 divides the numerator of the Bernoulli number B(2k), where p is the n-th irregular prime, A000928(n).

+0
3

37580, 86464, 153640, 581468, 914250, 454892, 1510618, 3557642, 84974, 8905404, 11482532, 9629910, 1025814, 9252440, 6484016, 22003936, 17706562, 30054878, 18332698, 37340812, 39775150, 31082358, 5118308, 20315982, 57395934, 25079280 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The ordered-pair (p(n),a(n)), where p(n) is the n-th irregular prime, is called a third-order irregular pair. Some irregular primes, such as 157, have more than one pair. See A091887 for a count of the number of pairs for each irregular prime.`
	LINKS	`Bernd Kellner, On irregular pairs of higher order (in German)`
	CROSSREFS	`Cf. A035112, A092681.` `Sequence in context: A057881 A112728 A022245 this_sequence A048526 A102332 A068077` `Adjacent sequences: A092679 A092680 A092681 this_sequence A092683 A092684 A092685`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Mar 03 2004`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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