145548domain: NAppears in sequencesa(n) = 3*(n-2)*(n-3)*(3*n^2-3*n-8)/2.at n=13A064198Number 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), (-1, 0, 0), (1, 0, 1), (1, 1, -1)}.at n=11A148801