Bisection of A185424. Numerators of even-indexed generalized Bernoulli numbers associated with the zigzag numbers A000111.

A185425

Bisection of A185424. Numerators of even-indexed generalized Bernoulli numbers associated with the zigzag numbers A000111.

Terms

    a(0) =1a(1) =1a(2) =19a(3) =253a(4) =3319a(5) =222557a(6) =422152729a(7) =59833795a(8) =439264083023

External references