Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..1 introduced in row major order.

A206654

Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..1 introduced in row major order.

Terms

    a(0) =1517a(1) =8374a(2) =50529a(3) =305347a(4) =1839784a(5) =11172263a(6) =67724531a(7) =410177144a(8) =2486962308a(9) =15075219306a(10) =91365402832a(11) =553811854726

External references