Denominators of expansion of arctanh(tan(x)) (odd powers only).

A335258

Denominators of expansion of arctanh(tan(x)) (odd powers only).

Terms

    a(0) =1a(1) =3a(2) =3a(3) =315a(4) =567a(5) =155925a(6) =93555a(7) =638512875a(8) =127702575

External references