G.f. A(x) satisfies A(A(A(A(A(x))))) = x + 5*x^2 + 25*x^3.
A372521
G.f. A(x) satisfies A(A(A(A(A(x))))) = x + 5*x^2 + 25*x^3.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =1a(4) =-24a(5) =176a(6) =-524a(7) =-5124a(8) =87126a(9) =-506774a(10) =-1759824a(11) =57671226a(12) =-358791624a(13) =-2206347624a(14) =49453238976a(15) =-92944954824
External references
- oeis: A372521