297120domain: NAppears in sequencesSum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026659.at n=25A026669Triangle T, read by rows, where g.f. of row n of matrix power T^n = (n^3 + y)*y^(n-1) for n>=0.at n=15A152285Column 0 of triangle A152285.at n=5A152286