109484domain: NAppears in sequencesExpansion of (1-x)/(1+x+2*x^2).at n=36A078050Number 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, 0, -1), (0, 0, 1), (0, 1, -1), (1, 0, -1)}.at n=11A149076