G.f.: Sum_{n>=0} ((1+x)^n - 1)^n / (1+x)^(n^2).
A220352
G.f.: Sum_{n>=0} ((1+x)^n - 1)^n / (1+x)^(n^2).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =16a(4) =118a(5) =1116a(6) =12869a(7) =175096a(8) =2745726a(9) =48756438a(10) =967026762a(11) =21188546616a(12) =508286084222
External references
- oeis: A220352