Number of (n+1)X2 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

A185605

Number of (n+1)X2 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

Terms

    a(0) =0a(1) =580a(2) =2366a(3) =22236a(4) =118616a(5) =891506a(6) =5489048a(7) =38326452a(8) =247830606a(9) =1678338746a(10) =11045857798a(11) =73974786560a(12) =490178170074

External references