Expansion of e.g.f. arctanh(arctanh(x)) (odd powers only).

A296465

Expansion of e.g.f. arctanh(arctanh(x)) (odd powers only).

Terms

    a(0) =1a(1) =4a(2) =88a(3) =4688a(4) =459520a(5) =71876352a(6) =16428530688

External references