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Search: id:A122273
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| A122273 |
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Smallest prime p such that p^4 divides the numerator of Bernoulli number B(n). |
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5
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OFFSET
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1,1
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COMMENT
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A122272[n] begins {1250,3750,4802,6250,8750,9604,...} - Numbers n such that numerator of Bernoulli number B(n) is divisible by p^4, where p is prime. Note that numerator of BernoulliB[6250] is divisible by 5^5.
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LINKS
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Table of factors of the numerators of Bernoulli numbers Bn in the range n=2,...,10000. at www.bernoulli.org
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FORMULA
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a(n)^4 divides Numerator[ BernoulliB[ A122272(n) ] ].
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CROSSREFS
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Cf. A122272, A122270, A122271, A000367, A090997, A090987.
Adjacent sequences: A122270 A122271 A122272 this_sequence A122274 A122275 A122276
Sequence in context: A049789 A011500 A003103 this_sequence A052247 A088201 A139261
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KEYWORD
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nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Aug 28 2006
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