E.g.f.: x + (gdinv x - sinh x)/2, where gdinv = inverse-Gudermannian. Sequence has odd-indexed coefficients; others are zero.
A013525
E.g.f.: x + (gdinv x - sinh x)/2, where gdinv = inverse-Gudermannian. Sequence has odd-indexed coefficients; others are zero.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =30a(4) =692a(5) =25260a(6) =1351382a(7) =99680490a(8) =9695756072
External references
- oeis: A013525