Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 6.

A233674

Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 6.

Terms

    a(0) =48a(1) =928a(2) =28544a(3) =2442208a(4) =365293440a(5) =169016684160

External references