118420domain: NAppears in sequencesG.f. A(x,y) satisfies 1/x = Sum_{n=-oo..+oo} A(x,y)^n * (A(x,y)^n + y)^(n+1), as a triangle of coefficients T(n,k) of x^n*y^k in A(x,y), read by rows.at n=56A379200Column 1 of triangle A379200; a(n) = A379200(n,1) for n >= 2.at n=9A379201