G.f.: Sum_{n>=0} (1 + x)^(n^2) / 2^n.
A265936
G.f.: Sum_{n>=0} (1 + x)^(n^2) / 2^n.
Terms
- a(0) =2a(1) =6a(2) =72a(3) =1488a(4) =43212a(5) =1615824a(6) =73897824a(7) =3995603040a(8) =249332628600
External references
- oeis: A265936
A265936
G.f.: Sum_{n>=0} (1 + x)^(n^2) / 2^n.