A139822 Denominator of BernoulliB(10^n).

2, 66, 33330, 342999030, 2338224387510, 9355235774427510, 936123257411127577818510, 9601480183016524970884020224910, 394815332706046542049668428841497001870, 24675958688943241584150818852261991458372001870

Offset

0,1

Links

Robert G. Wilson v, Table of n, a(n) for n = 0..38 (a(0)-a(8) from Eric W. Weisstein, a(9)-a(20) from Seiichi Manyama)

Eric Weisstein's World of Mathematics, Bernoulli Number

Mathematica

Times @@ Select[1 + Divisors[10^n], PrimeQ]

Crossrefs

Cf. A114471 (length of a(n)).

Sequence in context: A350730 A255435 A335546 * A119552 A230663 A016535

Adjacent sequences: A139819 A139820 A139821 * A139823 A139824 A139825

Keyword

nonn

Author

Eric W. Weisstein, May 01 2008

Extensions

a(9) from Seiichi Manyama, Jan 21 2017

Status

approved