Number of (n+1) X 2 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to two.

A206190

Number of (n+1) X 2 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to two.

Terms

    a(0) =124a(1) =1012a(2) =8304a(3) =68180a(4) =559788a(5) =4596072a(6) =37735460a(7) =309822148a(8) =2543754976a(9) =20885173732a(10) =171475038268

External references