128156domain: 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), (0, 1, 0), (1, 0, 1)}.at n=10A149968a(n) = 2*A001610(n).at n=22A168674Real part of (n + i)^4.at n=19A272870