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%I #4 Jan 19 2014 12:24:01
%S 2148,16128,146568,1351296,12511728,115757328,1072589616,9925448784,
%T 91969145856,851086457904,7885964625216,72978958778976,
%U 676188542581680,6257796438868368,57980372654051280,536592972297524208
%N Number of (n+1)X(3+1) 0..2 arrays colored with the sets of distinct values in every 2X2 subblock
%C Column 3 of A236155
%H R. H. Hardin, <a href="/A236150/b236150.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 91*a(n-2) +17*a(n-3) -555*a(n-4) -199*a(n-5) -2759*a(n-6) -806*a(n-7) +12016*a(n-8) +8767*a(n-9) +37038*a(n-10) +23107*a(n-11) -30178*a(n-12) -50102*a(n-13) -64316*a(n-14) -22746*a(n-15) -28056*a(n-16) +29816*a(n-17) -137392*a(n-18) -67760*a(n-19) -1568*a(n-20) -11584*a(n-21) +3392*a(n-22) -192*a(n-23) for n>26
%e Some solutions for n=3
%e ..0..2..2..2....1..2..0..0....0..0..0..0....1..1..0..1....1..1..1..1
%e ..2..0..1..2....2..1..2..2....1..1..2..0....1..2..1..0....1..2..0..1
%e ..1..1..0..0....0..2..1..0....0..2..1..0....0..2..2..1....0..0..2..1
%e ..1..2..1..1....2..0..0..0....0..0..0..1....0..0..1..1....2..2..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 19 2014
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