Number of (n+1)X(4+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 13.

A233977

Number of (n+1)X(4+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 13.

Terms

    a(0) =50680a(1) =453988a(2) =4097024a(3) =44228076a(4) =495606992a(5) =6350866260a(6) =83799022884

External references