60977

Appears in sequences

• Numbers k such that phi(k)*k is a triangular number.at n=14A115910
• 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, -1, 1), (-1, 0, 1), (0, 1, -1), (1, 0, 1)}.at n=10A148922