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%I #6 May 27 2021 15:12:55
%S 22,564,11264,187103,2719602,35688774,432076735,4902528769,
%T 52736915601,542569977315,5375623914286,51570049073953,
%U 481136370463155,4381314203869479,39057034725462456,341691760691655645
%N Number of n X 3 0..2 arrays with row sums and column sums unimodal.
%C Column 3 of A223892.
%H R. H. Hardin, <a href="/A223890/b223890.txt">Table of n, a(n) for n = 1..51</a>
%e Some solutions for n=3
%e ..2..2..0....2..2..1....0..2..1....1..2..0....0..0..1....2..1..1....0..0..0
%e ..0..2..2....1..1..1....2..1..1....2..1..0....0..1..2....2..2..2....0..1..0
%e ..2..0..2....0..2..1....1..2..0....1..0..1....0..2..2....0..1..0....2..1..0
%Y Cf. A223892.
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 28 2013
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