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A146933 Number of n X n binary arrays with all ones connected only in a 1111-1111 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:14

%S 1,1,1,7,25,89,559,4332,47525,720844,13515353,345530332,11945906159,

%T 546900316419,33704239869671,2765958377374818

%N Number of n X n binary arrays with all ones connected only in a 1111-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .1.1.1.1.0.0.0.0

%e .1.1.1.1.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .1.1.0.1.1.0.1.1

%e .1.1.0.1.1.0.1.1

%e .1.1.0.1.1.0.1.1

%e .1.1.0.1.1.0.1.1

%K nonn

%O 1,4

%A _R. H. Hardin_, Nov 04 2008

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)