2751489domain: 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, 0, 0), (-1, 0, 1), (0, -1, 0), (1, 0, -1), (1, 1, 1)}.at n=11A149773Primitive solutions k to k^2 = u^4 + v^4 + w^4, with u, v, w > 0.at n=27A365688