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%I #4 Jan 17 2014 16:46:16
%S 1964,16744,119770,856720,6207010,44922684,325144432,2361022844,
%T 17119474440,124220037442,901411171700,6541404674180,47455915679480,
%U 344384422869056,2499060418302142,18133500864283732,131575224210238262
%N Number of (n+1)X(2+1) 0..3 arrays colored with the upper median value of each 2X2 subblock
%C Column 2 of A235972
%H R. H. Hardin, <a href="/A235966/b235966.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 160*a(n-3) +1405*a(n-4) +2240*a(n-5) +5011*a(n-6) -47892*a(n-7) -167088*a(n-8) -266910*a(n-9) -62360*a(n-10) +1453816*a(n-11) +3423362*a(n-12) +2700096*a(n-13) -2875681*a(n-14) -1353448*a(n-15) +2584789*a(n-16) -4251920*a(n-17) -8824295*a(n-18) +685061*a(n-19) +4397856*a(n-20) +158216*a(n-21) +4986700*a(n-22) +129756*a(n-23) +547072*a(n-24) +96320*a(n-25) -215488*a(n-26) -16688*a(n-27) -35392*a(n-28) -9216*a(n-29) for n>34
%e Some solutions for n=3
%e ..2..1..1....1..0..1....0..2..3....1..2..3....2..3..1....0..1..2....1..0..2
%e ..3..0..0....0..3..2....2..1..3....1..2..3....0..0..3....0..2..1....1..2..1
%e ..3..0..3....0..2..3....0..0..2....0..1..0....1..0..1....2..0..0....3..0..1
%e ..2..1..0....0..0..0....3..0..1....3..3..0....2..3..3....1..0..3....3..3..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 17 2014
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