Numerator of (2n+1) B_{2n}, where B_n are the Bernoulli numbers.

A002427

Numerator of (2n+1) B_{2n}, where B_n are the Bernoulli numbers.

Terms

    a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-3a(5) =5a(6) =-691a(7) =35a(8) =-3617a(9) =43867a(10) =-1222277a(11) =854513a(12) =-1181820455a(13) =76977927a(14) =-23749461029

External references