G.f. A(x) satisfies: Sum_{n>=0} x^n*A(x)^(n*(n+1)/2) = Sum_{n>=0} x^n*(1+x)^(n^2).
A325289
G.f. A(x) satisfies: Sum_{n>=0} x^n*A(x)^(n*(n+1)/2) = Sum_{n>=0} x^n*(1+x)^(n^2).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =9a(5) =41a(6) =200a(7) =1096a(8) =6440a(9) =40095a(10) =262298a(11) =1790395a(12) =12699751a(13) =93311273a(14) =708519038a(15) =5549751855a(16) =44780255681a(17) =371785828813
External references
- oeis: A325289