Search: id:A146183
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%I A146183
%S A146183 1,1,1,1,5,17,43,197,1293,11263,110807,1310257,21564593,459131585,
%T A146183 12523288493,440243859565,19398701026043,1090842898014815,
%U A146183 79649624560507867,7542069381975617255,913933732625520247505
%N A146183 Number of n X n binary arrays symmetric about main diagonal with all 
               ones connected only in a 110-111-100 pattern in any orientation.
%e A146183 Maximal 8 X 8 example
%e A146183 .0.0.1.1.1.0.0.0
%e A146183 .0.0.1.1.0.0.0.0
%e A146183 .1.1.0.1.0.0.0.0
%e A146183 .1.1.1.0.0.0.0.1
%e A146183 .1.0.0.0.0.1.1.1
%e A146183 .0.0.0.0.1.0.1.1
%e A146183 .0.0.0.0.1.1.0.0
%e A146183 .0.0.0.1.1.1.0.0
%Y A146183 Sequence in context: A089527 A146778 A146858 this_sequence A163424 A099451 
               A133252
%Y A146183 Adjacent sequences: A146180 A146181 A146182 this_sequence A146184 A146185 
               A146186
%K A146183 nonn
%O A146183 1,5
%A A146183 Ron Hardin (rhhardin(AT)att.net), Oct 27 2008

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