381375domain: 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, 1), (0, 1, -1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.at n=9A150964a(n) = n^3*(n^2 + 1)/2.at n=15A168178