Numerators of coefficients in expansion of x/arctan(x)-1 (even powers only).

A216272

Numerators of coefficients in expansion of x/arctan(x)-1 (even powers only).

Terms

    a(0) =1a(1) =-4a(2) =44a(3) =-428a(4) =10196a(5) =-10719068a(6) =25865068a(7) =-5472607916a(8) =74185965772

External references