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A250289
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Numbers n such that the numerator of Bernoulli(n) (A027641(n)) is a semiprime.
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0
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20, 24, 26, 34, 38, 40, 64, 72, 74, 114, 118, 144, 192
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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) = 20 so the numerator of Bernoulli(20) = 174611 = 283 * 617 is a semiprime.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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