Number of (n+2)X7 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.

A204604

Number of (n+2)X7 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) =16247580a(1) =40672735a(2) =43980907a(3) =69792825a(4) =207096000a(5) =1139760144a(6) =6656676736a(7) =61015724528a(8) =513802492708

External references