103602domain: NAppears in sequencesSquarefree numbers sandwiched between two brilliant numbers.at n=31A085706Number 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), (-1, 1, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.at n=9A149484