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A122271
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a(n) is the smallest prime whose cube divides the numerator of the Bernoulli number B(A122270(n)).
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5
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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
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(1) = 5 because 5^3 divides numerator(B(A122270(1)) = numerator(B(250)), but 3^3 does not.
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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