Number of (n+1) X 3 0..3 arrays with every 2 X 2 subblock nonsingular.

A183703

Number of (n+1) X 3 0..3 arrays with every 2 X 2 subblock nonsingular.

Terms

    a(0) =2472a(1) =108624a(2) =4760784a(3) =208772880a(4) =9154058448a(5) =401390133264

External references