G.f.: Sum_{n>=0} (n+1)*(n+2)/2 * 2^(n*(n-1)) * x^n.
A202944
G.f.: Sum_{n>=0} (n+1)*(n+2)/2 * 2^(n*(n-1)) * x^n.
Terms
- a(0) =1a(1) =3a(2) =24a(3) =640a(4) =61440a(5) =22020096a(6) =30064771072
External references
- oeis: A202944
A202944
G.f.: Sum_{n>=0} (n+1)*(n+2)/2 * 2^(n*(n-1)) * x^n.