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Number of nX4 0..3 arrays with row sums unimodal and column sums inverted unimodal
0

%I #3 Mar 25 2013 08:47:20

%S 130,29922,5285887,761845474,93974096640,10253839694278,

%T 1013084819998517,92199924066276051,7830543600441814997,

%U 626952495503328450002

%N Number of nX4 0..3 arrays with row sums unimodal and column sums inverted unimodal

%C Column 4 of A223663

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 25 2013