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

A185612

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

Terms

    a(0) =361a(1) =24993a(2) =554305a(3) =16830089a(4) =455401149a(5) =13132512119a(6) =367637937923

External references