Number of nX4 binary arrays with every element neighboring horizontally or vertically both a 0 and a 1.

A203281

Number of nX4 binary arrays with every element neighboring horizontally or vertically both a 0 and a 1.

Terms

    a(0) =0a(1) =16a(2) =64a(3) =676a(4) =4624a(5) =40000a(6) =311364a(7) =2534464a(8) =20286016a(9) =163430656a(10) =1313337600a(11) =10564961796a(12) =84952429156a(13) =683217964900

External references