-1907domain: ZAppears in sequencesa(n) = -n^2 + 9*n + 53.at n=49A126665Expansion of x*(4+9*x-7*x^2) / ((1-x)*(1+3*x-x^2)).at n=7A134250G.f. A(x) satisfies: (1 + x) = A(x)*A(x^2)^2*A(x^3)^3*A(x^4)^4* ... *A(x^k)^k* ...at n=23A307649Triangle of numerators for rational convergents to Taylor series of 1/Gamma(x+1).at n=34A386675