A235429 - OEIS

%I #4 Jan 10 2014 08:06:42

%S 344668,119751976,44578500538,15581843596522,5142104597554476,

%T 1550644780068851532,431426810362366766936,111040229583937964889604,

%U 26705433450948373665368290,6045470974183011960362970648

%N Number of (n+1)X(4+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise

%C Column 4 of A235430

%H R. H. Hardin, <a href="/A235429/b235429.txt">Table of n, a(n) for n = 1..23</a>

%e Some.solutions.for.n=1

%e ..2..2..0..3..0....1..0..3..0..3....0..2..0..0..3....1..0..2..0..1

%e ..1..1..2..3..3....1..2..0..1..1....1..3..2..3..2....2..2..1..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 10 2014