G.f. satisfies A(x) = A(A(x)) - x^2 with A(0)=0.
A138740
G.f. satisfies A(x) = A(A(x)) - x^2 with A(0)=0.
Terms
- a(0) =1a(1) =1a(2) =-2a(3) =9a(4) =-56a(5) =420a(6) =-3572a(7) =33328a(8) =-334354a(9) =3559310a(10) =-39838760a(11) =465743720a(12) =-5658983108a(13) =71191948512a(14) =-924554859776
External references
- oeis: A138740