Number of (n+1) X 3 0..2 arrays with every 2 X 3 or 3 X 2 subblock having an equal number of clockwise and counterclockwise edge increases.

A206408

Number of (n+1) X 3 0..2 arrays with every 2 X 3 or 3 X 2 subblock having an equal number of clockwise and counterclockwise edge increases.

Terms

    a(0) =423a(1) =5199a(2) =69585a(3) =953865a(4) =13148043a(5) =181467207a(6) =2505335985a(7) =34591087977a(8) =477605748651

External references