63327domain: NAppears in sequencesSchroeder pseudoprimes: Composites k that divide the k-th Schroeder number A001003(k-1).at n=36A075764Number 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, 0), (-1, 0, 0), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.at n=8A150931