%I #4 Feb 16 2014 06:09:17
%S 1460,12218,102396,945688,8557942,78337964,716030830,6626058730,
%T 60902085946,559346439326,5140225864226,47419445292180,
%U 436362328110996,4011308753979910,36899808297882686,339945224296109426
%N Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A237951
%H R. H. Hardin, <a href="/A237947/b237947.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=3
%e ..1..1..1....2..0..3....0..2..2....2..3..0....0..3..1....3..3..2....2..2..1
%e ..1..0..2....1..1..1....3..3..2....1..2..1....0..2..0....1..0..1....2..3..3
%e ..1..2..1....2..2..3....2..3..1....0..3..2....2..2..1....2..3..1....2..3..3
%e ..2..0..1....2..2..2....1..3..1....2..2..3....1..1..1....2..0..2....2..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 16 2014
