5547947domain: 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, 0), (-1, 0, 0), (-1, 1, 1), (0, 0, -1), (1, 0, 1)}.at n=13A149242Numerator of h(n+6) - h(n), where h(n) = Sum_{k=1..n} 1/k.at n=26A192359