Expansion of Sum_{k>=0} (k * x * (1 + k*x^3))^k.
A360731
Expansion of Sum_{k>=0} (k * x * (1 + k*x^3))^k.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =27a(4) =257a(5) =3141a(6) =46899a(7) =827639a(8) =16855357a(9) =389100834a(10) =10040378183a(11) =286386193685
External references
- oeis: A360731