%I #4 Feb 17 2014 08:29:36
%S 1760,20732,249664,3029204,36751872,446229436,5413951288,65636758792,
%T 796414874192,9671088645980,117339031195880,1422572305954956,
%U 17261016589311336,209605459590414108,2543137127074039224
%N Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A238054
%H R. H. Hardin, <a href="/A238050/b238050.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 21904*a(n-4) -5020646*a(n-8) +499932588*a(n-12) -25264518617*a(n-16) +465397769602*a(n-20) -8930151275492*a(n-24) -30272393514402*a(n-28) -940962161512745*a(n-32) -9250969739341106*a(n-36) +3202689128170244*a(n-40) +45277613917985096*a(n-44) -41338678777674816*a(n-48) +4676290285004864*a(n-52) -425308924384640*a(n-56) +154898627924480*a(n-60) for n>64
%e Some solutions for n=2
%e ..3..0..2....3..2..1....3..1..3....1..2..0....2..3..0....1..2..0....2..1..0
%e ..2..0..2....1..0..2....0..3..1....2..1..2....3..3..0....3..2..3....3..0..2
%e ..0..0..1....2..2..2....3..2..3....2..2..1....2..2..2....3..1..0....2..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 17 2014