76574domain: 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, 0, 1), (0, 1, -1), (1, 0, 1)}.at n=11A148671G.f. satisfies: A(x) = x + A( x^2 + x^2*A(x) ).at n=18A211180