G.f. satisfies: A(A(A(A(x)))) = A(A(A(x))) + x^2.
A177751
G.f. satisfies: A(A(A(A(x)))) = A(A(A(x))) + x^2.
Terms
- a(0) =1a(1) =1a(2) =-6a(3) =69a(4) =-1062a(5) =19462a(6) =-402088a(7) =9085441a(8) =-220353750a(9) =5665524898a(10) =-153082742620
External references
- oeis: A177751