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%I #5 Mar 31 2012 12:37:17
%S 31,961,11067,127449,2048823,32936121,474552171,6837470721,
%T 102807481767,1545802349809,22864149458035,338186399124025,
%U 5035128104126565,74966098845588129,1113208750837622133,16530588386278151641
%N Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically
%C Row 7 of A207426
%H R. H. Hardin, <a href="/A207431/b207431.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..1..0..0....0..0..1..1....1..0..1..1....1..0..1..1....0..1..1..1
%e ..0..0..1..1....0..1..1..1....0..1..1..0....1..1..0..1....1..1..0..1
%e ..0..1..1..1....0..1..1..0....1..1..0..0....1..1..0..1....1..1..1..0
%e ..0..1..1..0....0..0..1..1....1..1..0..0....1..0..0..1....0..1..1..0
%e ..0..1..1..1....0..0..1..1....1..1..0..0....1..0..0..1....0..1..1..0
%e ..0..0..1..1....0..0..1..1....1..1..0..0....1..0..0..1....0..1..1..0
%e ..0..1..1..0....0..0..1..1....1..1..0..0....1..0..0..1....0..1..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 17 2012
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