Number of (n+2)X9 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.

A204606

Number of (n+2)X9 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) =1240455298a(1) =1982068849a(2) =2572437376a(3) =4518555426a(4) =6656676736a(5) =9620299328a(6) =20253298532a(7) =128896188864

External references