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%I #5 Mar 31 2012 12:37:01
%S 22500,1077978,47834122,1271789125,32895567670,592113170884,
%T 10499120334579,142632804549589,1918455248089606,21064909995711116,
%U 229630271367702047,2135133737142157099,19745487705327645774
%N Number of (n+1)X4 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards
%C Column 3 of A204309
%H R. H. Hardin, <a href="/A204305/b204305.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..3..2..3....3..3..1..3....1..1..3..2....0..0..1..1....1..0..2..1
%e ..1..0..0..1....0..1..2..3....2..3..1..3....1..3..3..3....0..3..3..3
%e ..1..3..2..3....3..3..2..2....0..3..2..3....2..0..1..2....3..3..2..3
%e ..2..3..1..3....0..2..2..3....2..3..3..3....1..3..3..3....0..3..3..3
%e ..1..3..2..3....3..3..2..2....1..2..3..3....0..2..1..2....3..3..2..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 14 2012
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