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%I #3 Mar 31 2012 12:35:09
%S 1,1,5,13,47,375,3972,47068,892007,26215027,1025956370,55524872121,
%T 4474246357794,516153334755405,83220252331733856,19182699863712254411
%N Number of n X n binary arrays with all ones connected only either as two by three or three by two blocks.
%e Maximal 8 X 8 example
%e .1.1.1.0.0.1.1.1
%e .1.1.1.0.0.1.1.1
%e .0.0.0.0.0.0.0.0
%e .1.1.1.0.0.1.1.1
%e .1.1.1.0.0.1.1.1
%e .0.0.0.0.0.0.0.0
%e .0.1.1.1.0.1.1.1
%e .0.1.1.1.0.1.1.1
%K nonn
%O 1,3
%A _R. H. Hardin_, Oct 27 2008
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