5074015domain: NAppears in sequencesG.f.: Sum_{n>=0} x^n * (1+x)^(n^2).at n=12A121689G.f.: A(x,y) = Sum_{n>=0} x^n * ((1+x)^n + y)^n, where A(0) = 0, as a triangle of coefficients T(n,k) of x^n*y^k in A(x,y) = Sum_{n>=0} x^n * Sum_{k=0..n} T(n,k)*x^n*y^k, read by rows.at n=78A325580