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%I #7 Dec 16 2022 09:01:44
%S 1,1,5,17,37,109,2661,46501,480069,5729689,346242155,24356919567,
%T 1272792100111,72738009625423,11858558725473199,2972962662671644607,
%U 716003950107687603735
%N Number of n X n binary arrays with all ones connected only in a 111-110-111 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.0.0.0.0.0
%e .1.1.1.0.0.1.1.1
%e .1.1.0.0.0.0.1.1
%e .1.1.1.0.0.1.1.1
%e .0.0.0.0.0.0.0.0
%e .0.1.0.1.0.1.0.1
%e .0.1.1.1.0.1.1.1
%e .0.1.1.1.0.1.1.1
%K nonn,more
%O 1,3
%A _R. H. Hardin_
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