Number of (n+1)X2 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock equal to the number in all its horizontal and vertical neighbors.
A205090
Number of (n+1)X2 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock equal to the number in all its horizontal and vertical neighbors.
Terms
- a(0) =256a(1) =1328a(2) =8176a(3) =55848a(4) =401164a(5) =2965056a(6) =22161076a(7) =166572246a(8) =1254940334a(9) =9466169218a(10) =71445543963a(11) =539397114979
External references
- oeis: A205090