80436

Appears in sequences

• Number of 4-step E, S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=38A187587
• Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 3 neighboring 1s.at n=6A297515
• T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 3 neighboring 1s.at n=51A297519
• Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 3 neighboring 1s.at n=3A297525
• a(n) = 324*n^2 - 804*n + 468 (n>=2).at n=15A304619