8129436

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, 1, -1), (0, 1, -1), (1, 0, 1)}.at n=15A148583
• Number of (n+5)X9 0..2 matrices with each 6X6 subblock idempotent.at n=21A224632