Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally, vertically or nw-to-se diagonally exactly one way.

A204601

Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally, vertically or nw-to-se diagonally exactly one way.

Terms

    a(0) =29678a(1) =144168a(2) =741296a(3) =4820300a(4) =40672735a(5) =304865717a(6) =1982068849a(7) =16593833004a(8) =127399338238a(9) =849110928402

External references