Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.

A297689

Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.

Terms

    a(0) =5a(1) =26a(2) =95a(3) =415a(4) =1801a(5) =7526a(6) =32173a(7) =137242a(8) =583129a(9) =2484786a(10) =10583683a(11) =45062520a(12) =191933126a(13) =817441956a(14) =3481360348a(15) =14827246426a(16) =63149259874a(17) =268952155501

External references