21615769428
domain: N
Appears in sequences
- Number of (n+1)X(n+1) binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums.at n=5A188303
- Number of (n+1)X7 binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums.at n=5A188308