G.f. A(x) satisfies: Sum_{n>=0} x^(n^2) * A(x)^n = Sum_{n>=0} x^n * (1+x)^(n^2).
A337850
G.f. A(x) satisfies: Sum_{n>=0} x^(n^2) * A(x)^n = Sum_{n>=0} x^n * (1+x)^(n^2).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =15a(4) =53a(5) =217a(6) =973a(7) =4735a(8) =24686a(9) =137026a(10) =805273a(11) =4986541a(12) =32409056a(13) =220327688a(14) =1562196894a(15) =11522725486a(16) =88215618320a(17) =699573288808
External references
- oeis: A337850