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%I #4 Dec 13 2012 06:49:53
%S 1,1,1,2,6,2,4,23,23,4,7,94,236,94,7,12,380,2095,2095,380,12,21,1494,
%T 18296,39780,18296,1494,21,37,5939,154562,722126,722126,154562,5939,
%U 37,65,23398,1280878,12480964,26483660,12480964,1280878,23398,65,114,92317
%N T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..2 nXk array
%C Table starts
%C ..1.....1.......2........4........7.......12........21.......37....65.114
%C ..1.....6......23.......94......380.....1494......5939....23398.92317
%C ..2....23.....236.....2095....18296...154562...1280878.10492879
%C ..4....94....2095....39780...722126.12480964.209958887
%C ..7...380...18296...722126.26483660
%C .12..1494..154562.12480964
%C .21..5939.1280878
%C .37.23398
%C .65
%H R. H. Hardin, <a href="/A220375/b220375.txt">Table of n, a(n) for n = 1..49</a>
%e Some solutions for n=3 k=4
%e ..1..0..1..1....0..0..0..0....0..0..0..0....1..1..0..1....0..0..0..0
%e ..1..1..0..1....0..1..0..0....1..1..1..1....1..1..0..1....0..1..0..1
%e ..0..0..1..0....0..0..0..1....1..1..1..1....0..1..1..1....0..0..1..1
%Y Column 1 is A005251(n+1)
%K nonn,tabl
%O 1,4
%A _R. H. Hardin_ Dec 13 2012
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