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A271634
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Numbers n such that Bernoulli number B_{n} has denominator 510.
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27
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16, 32, 64, 128, 304, 496, 608, 752, 944, 992, 1504, 1648, 1744, 1984, 2512, 2672, 3008, 3152, 3296, 3376, 3488, 3568, 3632, 3664, 3856, 3968, 4112, 4208, 4528, 4976, 5024, 5072, 5344, 5584, 5648, 5776, 5872, 6016, 6064, 6128, 6224, 6304, 6592, 6752, 7024, 7136, 7264
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OFFSET
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1,1
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COMMENTS
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510 = 2 * 3 * 5 * 17.
All terms are multiple of a(1) = 16.
For these numbers numerator(B_{n}) mod denominator(B_{n}) = 463.
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LINKS
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EXAMPLE
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Bernoulli B_{16} is -3617/510, hence 16 is in the sequence.
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MAPLE
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with(numtheory): P:=proc(q, h) local n; for n from 2 by 2 to q do
if denom(bernoulli(n))=h then print(n); fi; od; end: P(10^6, 510);
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MATHEMATICA
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Select[Range[0, 1000], Denominator[BernoulliB[#]] == 510 &] (* Robert Price, Apr 21 2016 *)
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PROG
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(PARI) isok(n) = denominator(bernfrac(n)) == 510; \\ Michel Marcus, Apr 22 2016
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CROSSREFS
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Cf. A045979, A051222, A051225, A051226, A051227, A051228, A051229, A051230, A119456, A119480, A249134, A255684, A271635, A272138, A272139, A272140, A272183, A272184, A272185, A272186.
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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