Expansion of e.g.f. tanh(sin(arctan(x))) = tanh(x/sqrt(1+x^2)) (odd powers only).
A012026
Expansion of e.g.f. tanh(sin(arctan(x))) = tanh(x/sqrt(1+x^2)) (odd powers only).
Terms
- a(0) =1a(1) =-5a(2) =121a(3) =-6677a(4) =651985a(5) =-98741477a(6) =21378584137
External references
- oeis: A012026