G.f.: Sum_{n>=0} a(n)*x^n/(1+x)^(n^2) = 1+x.
A177447
G.f.: Sum_{n>=0} a(n)*x^n/(1+x)^(n^2) = 1+x.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =18a(5) =172a(6) =2313a(7) =40626a(8) =887326a(9) =23282964a(10) =715540140a(11) =25259729071
External references
- oeis: A177447