A235504 - OEIS

%I #4 Jan 11 2014 11:36:06

%S 33640,3945383,490074558,51929974331,5302813444717,486511569699939,

%T 42291681755835352,3427953232697851324,265272758284291968338,

%U 19577770025610345890094,1394126518359017147630547

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

%C Column 3 of A235506

%H R. H. Hardin, <a href="/A235504/b235504.txt">Table of n, a(n) for n = 1..143</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 11 2014