E.g.f.: Sum_{n>=0} (n+1)*(n+2)/2 * x^n * (exp(n*x) + 1)^n / (1 + x*exp(n*x))^(n+3).
A325996
E.g.f.: Sum_{n>=0} (n+1)*(n+2)/2 * x^n * (exp(n*x) + 1)^n / (1 + x*exp(n*x))^(n+3).
Terms
- a(0) =1a(1) =3a(2) =18a(3) =141a(4) =2100a(5) =40575a(6) =1160298a(7) =40389825a(8) =1772078808a(9) =92182377051
External references
- oeis: A325996