G.f. satisfies: A(x) = Sum_{n>=0} n! * x^n * A(x)^(n*(n+1)/2) / Product_{k=1..n} (1 + k*x*A(x)^k).
A222013
G.f. satisfies: A(x) = Sum_{n>=0} n! * x^n * A(x)^(n*(n+1)/2) / Product_{k=1..n} (1 + k*x*A(x)^k).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =32a(5) =172a(6) =1038a(7) =6865a(8) =49098a(9) =376942a(10) =3094812a(11) =27129690a(12) =253821716a(13) =2534600760a(14) =27012498668a(15) =307083883519
External references
- oeis: A222013