3143826domain: NAppears in sequencesSquare array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A381574.at n=43A381573G.f. A(x) satisfies A(x) = 1/(1 - x*A(x*A(x)))^3.at n=7A381574