490832domain: 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), (1, 0, -1), (1, 1, 1)}.at n=12A149114G.f. satisfies A(x) = 1/(1 - 2*x) - x*A(x)^3.at n=23A364641