The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #6 Dec 15 2023 20:21:58
%S 5038,44648,408824,4021892,40288632,418287818,4418514021,47970957966,
%T 529234228994,5972920589738,68350297258483,796609824373786,
%U 9387787977650655,112196010761065635,1352091822449547149
%N Number of (n+1) X (3+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2 X 2 subblock equal.
%C Column 3 of A237694.
%H R. H. Hardin, <a href="/A237690/b237690.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..3..1..2..1....0..2..1..3....1..1..0..1....2..2..1..0....1..0..2..0
%e ..0..2..1..2....0..3..3..2....1..3..0..3....2..3..3..3....2..2..1..0
%e ..0..2..3..0....1..3..2..2....2..2..1..2....0..0..1..2....2..1..1..3
%Y Cf. A237694.
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 11 2014