E.g.f. arcsinh(sin(arctan(x))) = arcsinh(x/(1+x^2)^(1/2)) (odd powers only).
A012025
E.g.f. arcsinh(sin(arctan(x))) = arcsinh(x/(1+x^2)^(1/2)) (odd powers only).
Terms
- a(0) =1a(1) =-4a(2) =84a(3) =-4320a(4) =418320a(5) =-66225600a(6) =15657364800
External references
- oeis: A012025