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%I #4 Dec 31 2012 06:39:33
%S 1,32,323,3322,29939,254900,2080204,16745866,134159160,1073654544,
%T 8589790360,68719289140,549755523233,4398046165958,35184371572554,
%U 281474976136760,2251799812843688,18014398508593054,144115188074566894
%N Equals one maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 3Xn array
%C Row 3 of A221062
%H R. H. Hardin, <a href="/A221064/b221064.txt">Table of n, a(n) for n = 1..26</a>
%e Some solutions for n=3
%e ..0..1..1....1..1..0....0..1..0....1..0..1....1..0..0....0..0..0....0..1..0
%e ..1..1..1....1..0..0....1..0..0....1..1..0....0..1..1....1..1..1....1..0..0
%e ..0..0..1....0..1..0....1..1..0....1..0..1....1..0..1....0..1..0....0..1..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Dec 31 2012
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