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%I #4 Feb 09 2014 05:59:14
%S 1888,25280,344128,4672896,63456608,862467040,11715351424,
%T 159023453952,2159737999232,29352841877120,398714501823488,
%U 5412158969910144,73503840800214272,998985586501116032,13569728204514266112
%N Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A237544
%H R. H. Hardin, <a href="/A237540/b237540.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 33284*a(n-4) +25223312*a(n-8) +9872851088*a(n-12) +1714176739904*a(n-16) +117040615631104*a(n-20) -15333075217254400*a(n-24) +298524650406981632*a(n-28) -1514873805416611840*a(n-32) -6055029689993396224*a(n-36) +62325077822438113280*a(n-40) -94646495250940428288*a(n-44) +39539525251177119744*a(n-48) for n>50
%e Some solutions for n=2
%e ..1..3..1....3..2..3....1..0..2....1..1..1....2..2..1....2..0..2....2..3..0
%e ..3..0..0....2..1..3....1..1..3....2..3..1....3..3..3....2..3..3....3..3..2
%e ..1..2..3....0..0..0....3..3..2....2..3..2....1..0..2....0..3..2....0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 09 2014
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