E.g.f.: Sum_{n>=0} (n*y + x^n)^n / n! - Sum_{n>=0} n^n*y^n / n! at y=2.
A265277
E.g.f.: Sum_{n>=0} (n*y + x^n)^n / n! - Sum_{n>=0} n^n*y^n / n! at y=2.
Terms
- a(0) =1a(1) =8a(2) =108a(3) =2060a(4) =50000a(5) =1495152a(6) =52706752a(7) =2148128768a(8) =99179705664
External references
- oeis: A265277