1545368domain: NAppears in sequencesExpansion of x^4*(1-2*x-2*x^2)/(1-4*x+x^4-2*x^5-2*x^6).at n=15A115220Number 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, 1), (-1, 1, 0), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.at n=12A148741