217047

Appears in sequences

• Number 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, 1), (1, 0, 0)}.at n=12A148531
• Numbers k such that the abundancy index of sigma(k) divided by the abundancy index of d(k) equals a whole number.at n=36A392507