Number of (n+1)X4 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

A185607

Number of (n+1)X4 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

Terms

    a(0) =2366a(1) =172026a(2) =4473352a(3) =173403770a(4) =5539941616a(5) =195867482580

External references