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%I #4 Nov 02 2013 07:15:36
%S 3,5,24,47,191,396,1573,3317,13176,27805,110739,233632,931361,1965325,
%T 7836336,16538039,65947255,139182070,555025545,1171397043,4671332880,
%U 9859026059,39316357723,82978844636,330908274229,698396543107
%N Number of white square subarrays of (n+1)X(4+1) binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with upper left element zero
%C Column 4 of A230989
%H R. H. Hardin, <a href="/A230985/b230985.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 14*a(n-2) -61*a(n-4) +148*a(n-6) -289*a(n-8) +325*a(n-10) -227*a(n-12) +95*a(n-14) -28*a(n-16) +4*a(n-18)
%e Some solutions for n=6
%e ..0..x..1..x..1....0..x..0..x..0....0..x..0..x..0....0..x..0..x..1
%e ..x..1..x..0..x....x..1..x..1..x....x..1..x..1..x....x..1..x..0..x
%e ..0..x..1..x..1....0..x..0..x..1....1..x..1..x..0....0..x..0..x..1
%e ..x..0..x..0..x....x..0..x..0..x....x..0..x..0..x....x..1..x..1..x
%e ..1..x..0..x..1....1..x..1..x..0....1..x..1..x..0....1..x..0..x..1
%e ..x..1..x..1..x....x..1..x..1..x....x..0..x..1..x....x..0..x..0..x
%e ..0..x..0..x..0....0..x..0..x..0....1..x..1..x..0....1..x..1..x..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 02 2013
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