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%I #15 Apr 01 2016 08:58:11
%S 1,2,1,5,2,35,5,314,35,6427,314,202841,6427,12727570,202841,
%T 1355115601,12727570,269718819131,1355115601,94707789944544,
%U 269718819131,60711713670028729,94707789944544,69645620389200894313
%N Number of n X n binary matrices, symmetric under horizontal and vertical reflection, with no more than 1 one in any 2 X 2 subblock.
%C a(2n-1) = A063443(n+1). - _Vaclav Kotesovec_, May 01 2012
%C a(2n) = a(2n-3), for n>1. - _Vaclav Kotesovec_, Apr 01 2016
%H R. H. Hardin and Vaclav Kotesovec, <a href="/A141483/b141483.txt">Table of n, a(n) for n = 0..78</a> (terms 0..30 from R. H. Hardin, terms 31..78 after A063443)
%K nonn
%O 0,2
%A _R. H. Hardin_, Aug 09 2008
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