%I #5 Aug 11 2014 22:46:10
%S 1776,20128,227622,2570594,29039618,328887234,3724943100,42156330796,
%T 477092412942,5400733421386,61135784139176,691996650421482,
%U 7832804389781870,88662745929663094,1003604775495708714
%N Number of (n+1)X(2+1) 0..3 arrays with the maximum minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A238311
%H R. H. Hardin, <a href="/A238307/b238307.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A238307/a238307.txt">Empirical recurrence of order 76</a>
%F Empirical recurrence of order 76 (see link above)
%e Some solutions for n=2
%e ..2..0..0....3..2..2....1..0..3....2..2..2....3..1..2....1..0..3....0..1..2
%e ..0..1..3....2..2..2....2..2..1....3..2..1....1..2..1....2..0..1....3..0..3
%e ..0..0..3....2..1..1....0..0..2....1..1..2....1..2..2....1..2..0....1..3..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 24 2014