G.f. A(x) satisfies A(A(A(..(A(x))..))) = B(x) (12th self-COMPOSE of A) such that the coefficients of B(x) consist only of numbers {1,2,3,..,12}, with B(0) = 0.

A112125

G.f. A(x) satisfies A(A(A(..(A(x))..))) = B(x) (12th self-COMPOSE of A) such that the coefficients of B(x) consist only of numbers {1,2,3,..,12}, with B(0) = 0.

Terms

    a(0) =1a(1) =1a(2) =-10a(3) =160a(4) =-3061a(5) =63775a(6) =-1381434a(7) =30233546a(8) =-654989371a(9) =13821523157a(10) =-280493565375

External references