E.g.f.: -log(2 - cosh(x)) (even powers only).

A331978

E.g.f.: -log(2 - cosh(x)) (even powers only).

Terms

    a(0) =0a(1) =1a(2) =4a(3) =46a(4) =1114a(5) =46246a(6) =2933074a(7) =263817646a(8) =31943268634

External references