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A237387 Number of (n+1)X(3+1) 0..2 arrays colored with the maximum plus the upper median minus the minimum of every 2X2 subblock.

%I A237387 #6 Jul 23 2025 10:08:46
%S A237387 2336,24340,255937,2712486,28732972,306543648,3277420369,34947393232,
%T A237387 371861162189,3961014934240,42248068509857,450395711854966,
%U A237387 4798902441248885,51135372814961074,545076380858554986
%N A237387 Number of (n+1)X(3+1) 0..2 arrays colored with the maximum plus the upper median minus the minimum of every 2X2 subblock.
%C A237387 Column 3 of A237391
%H A237387 R. H. Hardin, <a href="/A237387/b237387.txt">Table of n, a(n) for n = 1..210</a>
%e A237387 Some solutions for n=2
%e A237387 ..0..0..0..2....0..0..2..2....2..1..1..1....2..2..1..2....1..1..2..2
%e A237387 ..0..1..1..0....2..1..2..2....2..1..0..2....0..2..2..0....1..0..0..1
%e A237387 ..2..1..1..0....1..1..0..2....1..1..2..2....1..0..1..1....0..0..0..0
%K A237387 nonn
%O A237387 1,1
%A A237387 _R. H. Hardin_, Feb 07 2014