G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n+1)/2) = Sum_{n>=0} x^n * (1 + x*A(x))^(n^2).
A325297
G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n+1)/2) = Sum_{n>=0} x^n * (1 + x*A(x))^(n^2).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =106a(6) =552a(7) =3154a(8) =19354a(9) =125787a(10) =857793a(11) =6097668a(12) =44974804a(13) =343043346a(14) =2699235640a(15) =21870283691a(16) =182217929993
External references
- oeis: A325297