Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1s.

A297797

Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1s.

Terms

    a(0) =1a(1) =11a(2) =37a(3) =108a(4) =533a(5) =2434a(6) =10287a(7) =45968a(8) =207906a(9) =927565a(10) =4149639a(11) =18631844a(12) =83542062a(13) =374482908a(14) =1679592819a(15) =7532686680a(16) =33779595704a(17) =151490828968a(18) =679394507158

External references