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%I
%S 45,47,50,56,66,86,122,194,330,602,1130,2186,4266,8426,16682,33194,
%T 66090,131882,263210,525866,1050666,2100266,4198442,8394794,16785450,
%U 33566762,67125290,134242346,268468266,536920106,1073807402,2147581994,4295098410
%N 1/4 the number of (n+1)X7 binary arrays with all 2X2 subblock sums the same
%C Column 6 of A183986
%H R. H. Hardin, <a href="/A183983/b183983.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for 5X7
%e ..0..0..1..0..1..0..1....1..0..1..0..1..0..1....0..1..0..1..0..1..0
%e ..1..1..0..1..0..1..0....0..0..0..0..0..0..0....0..1..0..1..0..1..0
%e ..0..0..1..0..1..0..1....1..0..1..0..1..0..1....0..1..0..1..0..1..0
%e ..1..1..0..1..0..1..0....0..0..0..0..0..0..0....0..1..0..1..0..1..0
%e ..0..0..1..0..1..0..1....1..0..1..0..1..0..1....0..1..0..1..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 08 2011
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