Half the number of (n+1)X(n+1) binary arrays with no 2X2 subblock containing exactly one 1.
A184188
Half the number of (n+1)X(n+1) binary arrays with no 2X2 subblock containing exactly one 1.
Terms
- a(0) =6a(1) =104a(2) =5074a(3) =723635a(4) =294738261a(5) =345350598641
External references
- oeis: A184188