E.g.f.: tanh(arcsin(arctan(x))), odd powers only.

A012094

E.g.f.: tanh(arcsin(arctan(x))), odd powers only.

Terms

    a(0) =1a(1) =-3a(2) =49a(3) =-1859a(4) =127297a(5) =-13662371a(6) =2114110257a(7) =-445110767139

External references