E.g.f.: C(x) = Sum_{n>=0} cosh((2*n+1)*x) * x^n / (1 + x^(2*n+1)).
A257214
E.g.f.: C(x) = Sum_{n>=0} cosh((2*n+1)*x) * x^n / (1 + x^(2*n+1)).
Terms
- a(0) =1a(1) =0a(2) =5a(3) =24a(4) =337a(5) =3280a(6) =46501a(7) =811496a(8) =15270977a(9) =318449952a(10) =7554700261a(11) =194401167928
External references
- oeis: A257214