Expansion of Sum_{k>=0} (k * x * (1 + x^2))^k.
A360727
Expansion of Sum_{k>=0} (k * x * (1 + x^2))^k.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =28a(4) =264a(5) =3206a(6) =47684a(7) =839249a(8) =17058688a(9) =393216567a(10) =10134918592a(11) =288815780665
External references
- oeis: A360727