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%I #8 Jan 20 2024 13:37:56
%S 4,160,16060,2411246,451319098,96914926654,22835261226043,
%T 5750097317505437,1521786116504544601,418628292901694453231,
%U 118789461093773656747975,34580941641153629118242103
%N Number of n X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing.
%C Diagonal of A224204.
%H R. H. Hardin, <a href="/A224198/b224198.txt">Table of n, a(n) for n = 1..17</a>
%e Some solutions for n=3
%e ..1..3..3....1..0..0....3..0..0....0..3..1....1..1..1....1..3..1....0..0..1
%e ..3..3..1....1..0..0....1..1..1....3..2..1....3..1..0....3..2..0....3..2..1
%e ..3..2..0....0..3..2....1..1..2....3..2..2....2..3..0....3..3..1....2..3..1
%Y Cf. A224204.
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 01 2013
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