id:A122271 - OEIS Search Results

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Smallest cube prime factor of the numerator of Bernoulli number B(n) (A122270(n)).

+0
5

5, 7, 5, 5, 7, 5, 5, 11, 7, 5, 5, 7, 5, 5, 13, 5, 7, 5, 7, 5, 5, 5, 7, 5, 7, 5, 11, 5, 5, 13, 7, 5, 7, 5, 17 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Table of factors of the numerators of Bernoulli numbers Bn in the range n=2,...,10000. at www.bernoulli.org`
	FORMULA	`a(n)^3 divides numerator of BernoulliB[ A122270(n) ].`
	EXAMPLE	`a(1) = 5 because 5^3 divides Numerator[ BernoulliB[ A122270[1] ] ].`
	CROSSREFS	`Cf. A122270, A000367, A090997, A090987, A122272, A122273.` `Adjacent sequences: A122268 A122269 A122270 this_sequence A122272 A122273 A122274` `Sequence in context: A104542 A161376 A107437 this_sequence A011205 A144567 A010718`
	KEYWORD	`nonn`
	AUTHOR	`Alexander Adamchuk (alex(AT)kolmogorov.com), Aug 28 2006`

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.