E.g.f. satisfies A(x) = (1 + x * exp(x) * A(x))^4.
A377576
E.g.f. satisfies A(x) = (1 + x * exp(x) * A(x))^4.
Terms
- a(0) =1a(1) =4a(2) =52a(3) =1116a(4) =34408a(5) =1394340a(6) =70298424a(7) =4248802516a(8) =299752943200
External references
- oeis: A377576