342584domain: NAppears in sequencesColumn 3 of triangle A113988, which is the matrix square of A113983: a(n) = [A113983^2](n+3,3).at n=7A113992a(n) = A120020(n)/n = coefficient of x^n in the n-th self-composition of the g.f. of A120010, divided by n, for n>=1.at n=7A120022G.f. satisfies: A(x) = x + A(A(A(A(x)^2))).at n=10A141380