Coefficient of [x^(4*n+2)] in expansion of e.g.f. tanh(cos(x) - cosh(x)).
A013477
Coefficient of [x^(4*n+2)] in expansion of e.g.f. tanh(cos(x) - cosh(x)).
Terms
- a(0) =-2a(1) =238a(2) =-473762a(3) =4544139598
External references
- oeis: A013477
A013477
Coefficient of [x^(4*n+2)] in expansion of e.g.f. tanh(cos(x) - cosh(x)).