A093058 Numbers k such that numerator of Bernoulli(2k) is divisible by the square of 59, the second irregular prime.

457, 1298, 2168, 3009, 3481, 3879, 4720, 5590, 6431, 6962, 7301, 8142, 9012, 9853, 10443, 10723, 11564, 12434, 13275, 13924, 14145, 14986, 15856, 16697, 17405, 17567, 18408

Offset: 1

Author

Robert G. Wilson v, Feb 26 2004

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Bernoulli Number.

Crossrefs

Cf. A000928, A091216, A092221.

Programs

Mathematica

Select[ Range[ 9695], Mod[ Numerator[ BernoulliB[2# ]], 59^2] == 0 &]

Formula

If we omit multiples of 3481 and take first differences, it appears that we get a common difference of {841, 870} repeated.

Extensions

More terms from Eric W. Weisstein, Mar 19 2004