Number of (n+1)X7 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.

A187137

Number of (n+1)X7 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.

Terms

    a(0) =72225a(1) =18740754a(2) =1921749372a(3) =245891941002

External references