G.f.: Sum_{n>=0} a(n)*x^n/(1+x)^(3*n^2) = 1+x.
A177449
G.f.: Sum_{n>=0} a(n)*x^n/(1+x)^(3*n^2) = 1+x.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =30a(4) =586a(5) =17865a(6) =756285a(7) =41440056a(8) =2805638310a(9) =227131872654
External references
- oeis: A177449