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A224284 Number of 5Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

%I A224284 #8 Jul 23 2025 05:04:47
%S A224284 1024,160000,2596992,21348990,137489538,817075668,4728056658,
%T A224284 26524273813,141437578159,706256665798,3280530467805,14165878265784,
%U A224284 57028400060821,214999615263699,762959963267749,2561695629991349,8178284227377456
%N A224284 Number of 5Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
%C A224284 Row 5 of A224281
%H A224284 R. H. Hardin, <a href="/A224284/b224284.txt">Table of n, a(n) for n = 1..210</a>
%H A224284 R. H. Hardin, <a href="/A224284/a224284.txt">Empirical polynomial of degree 30</a>
%F A224284 Empirical polynomial of degree 30 (see link above)
%e A224284 Some solutions for n=3
%e A224284 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e A224284 ..2..0..0....0..0..2....0..2..0....1..0..0....1..2..0....1..2..1....2..0..0
%e A224284 ..0..0..0....2..2..2....3..3..2....3..3..0....3..3..3....2..2..1....1..1..0
%e A224284 ..3..0..0....2..2..0....3..2..1....3..1..0....3..3..1....2..2..3....1..1..0
%e A224284 ..1..3..2....2..3..0....3..1..0....1..1..1....3..2..0....3..3..3....1..1..2
%K A224284 nonn
%O A224284 1,1
%A A224284 _R. H. Hardin_ Apr 02 2013