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A346717
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a(n) = denominator(Sum_{k=1..2*n} Bernoulli(1 + k) / ((1 + k) * k^(1 + k))).
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2
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1, 12, 9720, 212625000, 350211660750000, 165830100163770908250000, 615072417899094252893747931729750000, 186290124133142953867176980119009688414239626750000, 309270713892913107006055533400699678031452505346679687500000
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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r[n_] := Sum[BernoulliB[1 + k] / ((1 + k) * k^(1 + k)), {k, 1, 2*n}];
Table[r[n], {n, 0, 10}] // Denominator
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PROG
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(PARI) a(n) = denominator(sum(k=1, 2*n, bernfrac(1+k)/((1+k)*k^(1+k)))); \\ Michel Marcus, Aug 12 2021
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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STATUS
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approved
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