Expansion of e.g.f. tan(x*tan(x/2)) (even powers only).

A296839

Expansion of e.g.f. tan(x*tan(x/2)) (even powers only).

Terms

    a(0) =0a(1) =1a(2) =1a(3) =33a(4) =437a(5) =22205a(6) =978873a(7) =81005113a(8) =7356832669a(9) =949918117653

External references