Number of nX3 binary arrays with no two ones adjacent horizontally, diagonally or antidiagonally.

A228678

Number of nX3 binary arrays with no two ones adjacent horizontally, diagonally or antidiagonally.

Terms

    a(0) =5a(1) =19a(2) =77a(3) =313a(4) =1277a(5) =5215a(6) =21305a(7) =87049a(8) =355685a(9) =1453363a(10) =5938613a(11) =24265921a(12) =99153677a(13) =405154783a(14) =1655515121a(15) =6764650225a(16) =27641241413a(17) =112945711027a(18) =461510880221

External references