357501domain: 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, 1, -1), (0, 1, 1), (1, -1, 0), (1, 0, 0)}.at n=10A150023G.f.: exp( Sum_{n>=1} x^n * (1+x)^n / (n*(1-x^n)) ).at n=23A227681