Number of (n+1)X(3+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.

A233976

Number of (n+1)X(3+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) =7920a(1) =59440a(2) =455832a(3) =4097024a(4) =37974312a(5) =389559628a(6) =4063204904a(7) =45100814568a(8) =501030842392

External references