G.f. A(x) satisfies A(A(A(..(A(x))..))) = B(x) (7th self-COMPOSE of A) such that the coefficients of B(x) consist only of numbers {1,2,3,..,7}, with B(0) = 0.

A112115

G.f. A(x) satisfies A(A(A(..(A(x))..))) = B(x) (7th self-COMPOSE of A) such that the coefficients of B(x) consist only of numbers {1,2,3,..,7}, with B(0) = 0.

Terms

    a(0) =1a(1) =1a(2) =-5a(3) =43a(4) =-443a(5) =4957a(6) =-57281a(7) =661375a(8) =-7430526a(9) =79197417a(10) =-778914398a(11) =6845802239a(12) =-52074744048a(13) =345158019601

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