200648domain: 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, 1, 1), (0, 0, -1), (0, 1, -1), (1, 0, 1)}.at n=10A149367a(n) = 256*n^2 - 2*n.at n=27A158249