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A326580
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a(n) = (2*n+1)*denominator((2*n+1)*Bernoulli(2*n)).
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1
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1, 6, 30, 42, 90, 66, 2730, 30, 510, 798, 2310, 138, 13650, 54, 870, 14322, 5610, 210, 1919190, 78, 13530, 1806, 2070, 282, 324870, 1122, 1590, 43890, 16530, 354, 56786730, 126, 6630, 64722, 690, 4686, 140100870, 150, 2310, 3318, 6210270, 498, 57873270, 174
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OFFSET
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0,2
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LINKS
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FORMULA
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MAPLE
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A326580 := n -> (2*n+1)*denom((2*n+1)*bernoulli(2*n)):
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MATHEMATICA
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Table[(2n+1)Denominator[(2n+1)BernoulliB[2n]], {n, 0, 50}] (* Harvey P. Dale, Jul 31 2021 *)
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PROG
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(PARI) a(n) = (2*n+1)*denominator((2*n+1)*bernfrac(2*n)); \\ Michel Marcus, Jul 19 2019
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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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