Number of (n+1)X9 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums.
A188310
Number of (n+1)X9 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums.
Terms
- a(0) =11828a(1) =1694376a(2) =77627954a(3) =4280848766a(4) =228625683370
External references
- oeis: A188310