E.g.f.: exp( Sum_{n>=1} (1+x)^(n^2) * x^n/n ).
A227467
E.g.f.: exp( Sum_{n>=1} (1+x)^(n^2) * x^n/n ).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =24a(4) =252a(5) =3660a(6) =73560a(7) =1921080a(8) =63411600a(9) =2574406800a(10) =125747475840
External references
- oeis: A227467