A147452 - OEIS

A147452

Number of n X n binary arrays with all ones connected only in a 11000-01111-11000 pattern in any orientation.

%I #4 Mar 31 2012 12:35:17

%S 1,1,1,1,13,49,233,1439,14021,187331,3462054,81074523,2503802404

%N Number of n X n binary arrays with all ones connected only in a 11000-01111-11000 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.1.1.0.0.0

%e .0.1.0.0.1.1.1.1

%e .0.1.0.1.1.0.0.0

%e .1.1.1.0.0.1.0.1

%e .1.0.1.0.0.1.1.1

%e .0.0.0.1.1.0.1.0

%e .1.1.1.1.0.0.1.0

%e .0.0.0.1.1.0.1.0

%K nonn

%O 1,5

%A _R. H. Hardin_