57080domain: NAppears in sequencesNumber of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.at n=11A148199Expansion of Product_{k>=1} (1 + x^k * (k + x)).at n=22A336979