141649

Properties

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, -1), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.at n=10A149163
• Number of (n+1)X(n+1) -10..10 symmetric matrices with every 2X2 subblock having sum zero and one, three or four distinct values.at n=3A211819
• Prime numbersat n=13151