Number of n X n binary arrays with all ones connected only in a 1000-1000-1111-1000 pattern in any orientation.
A147123
Number of n X n binary arrays with all ones connected only in a 1000-1000-1111-1000 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =9a(4) =33a(5) =105a(6) =641a(7) =8787a(8) =211111a(9) =4653287a(10) =141740021a(11) =6813049829a(12) =531641820663
External references
- oeis: A147123