140864

Appears in sequences

• Numbers n such that phi(n) = sigma(n) - sigma(n+1).at n=6A063943
• One third of third column of triangle A067298.at n=5A067300
• 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), (0, 0, -1), (0, 0, 1), (0, 1, 1), (1, 1, -1)}.at n=9A150674