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A224285 Number of 6Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

%I A224285 #8 Jul 23 2025 05:04:54
%S A224285 4096,1600000,37128051,356222482,2425304290,14587480744,86539248276,
%T A224285 519675953580,3101250505830,17906548084860,98091759991859,
%U A224285 504379639489778,2424565118584031,10897029351109181,45902682124075154
%N A224285 Number of 6Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
%C A224285 Row 6 of A224281
%H A224285 R. H. Hardin, <a href="/A224285/b224285.txt">Table of n, a(n) for n = 1..102</a>
%H A224285 R. H. Hardin, <a href="/A224285/a224285.txt">Empirical polynomial of degree 36</a>
%F A224285 Empirical polynomial of degree 36 (see link above)
%e A224285 Some solutions for n=3
%e A224285 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e A224285 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e A224285 ..2..0..0....0..0..3....0..0..1....0..0..0....1..2..1....0..0..0....2..2..1
%e A224285 ..1..2..1....2..3..2....0..3..1....2..2..0....2..1..1....3..1..1....3..3..1
%e A224285 ..2..1..1....3..2..0....3..1..0....3..2..1....3..1..0....1..1..1....3..2..0
%e A224285 ..2..2..3....2..3..1....3..3..3....2..1..0....3..2..1....3..3..0....2..2..2
%K A224285 nonn
%O A224285 1,1
%A A224285 _R. H. Hardin_ Apr 02 2013