35049domain: 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, 0, 0), (0, -1, 1), (0, 1, 0), (1, 1, -1), (1, 1, 0)}.at n=8A150490G.f.: Sum_{n>=0} x^n * (1+x)^(n*(n+1)/2) / Product_{k=1..n} (1 + x*(1+x)^k).at n=14A221547