687913domain: 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), (-1, 1, -1), (0, 0, 1), (1, -1, 0), (1, 1, 1)}.at n=10A150477Number of points in Z^4 of norm <= n where the sum of the four entries is even.at n=23A380832