211817

Properties

Appears in sequences

• Numbers k such that phi(k) + phi(k+3) = phi(k+1) + phi(k+2).at n=17A076665
• 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, -1), (-1, -1, 0), (-1, 1, -1), (1, 0, -1), (1, 0, 1)}.at n=12A148535
• Prime numbersat n=18962