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%I #5 Dec 03 2013 07:54:55
%S 34,96,333,912,2874,8070,25028,71492,221072,637090,1967353,5696300,
%T 17569092,51022742,157190828,457507314,1408016908,4105250676,
%U 12622211969,36855295684,113218810762,330996127114,1016009702826,2973522638274
%N Number of (n+1)X(1+1) 0..3 arrays with row and column sums nondecreasing, and no adjacent elements equal
%C Column 1 of A233031
%H R. H. Hardin, <a href="/A233028/b233028.txt">Table of n, a(n) for n = 1..43</a>
%e Some solutions for n=5
%e ..0..3....0..2....1..2....0..3....2..1....2..1....2..0....0..3....0..1....2..0
%e ..3..0....2..1....2..1....1..2....1..3....1..2....0..2....3..0....1..0....1..2
%e ..2..1....0..3....1..2....3..0....3..1....0..3....2..1....1..2....2..1....0..3
%e ..0..3....1..2....0..3....0..3....1..3....2..1....1..2....2..1....1..2....1..2
%e ..1..2....2..1....2..1....3..0....3..2....1..2....2..1....1..2....2..3....2..1
%e ..2..3....1..3....3..0....1..2....2..3....0..3....0..3....2..1....3..2....0..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 03 2013
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