131397

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, 0, 0), (0, -1, 1), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.at n=9A150406
• Number of (n+2) X 7 binary arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.at n=22A190029
• a(n) = Sum_{k=1..n} floor(n/k)*2^(k-1).at n=16A268235