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A224267 Number of 7 X n 0..2 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

%I A224267 #9 Mar 18 2025 22:32:21
%S A224267 36,1296,24842,296646,2485967,15921905,83124099,371699763,1478187738,
%T A224267 5375576014,18237850918,58547208334,179599458173,530112786109,
%U A224267 1512954573026,4190185564746,11292006460221,29674041029167,76177448992499,191331238729653,470802086175412
%N A224267 Number of 7 X n 0..2 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.
%H A224267 R. H. Hardin, <a href="/A224267/b224267.txt">Table of n, a(n) for n = 1..41</a>
%H A224267 R. H. Hardin, <a href="/A224267/a224267.txt">Empirical polynomial of degree 28</a>
%F A224267 Empirical polynomial of degree 28 (see link above).
%e A224267 Some solutions for n=3:
%e A224267 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..1....1..1..0....0..1..0
%e A224267 ..0..0..1....0..1..0....0..0..1....0..1..0....0..2..2....1..1..1....1..1..0
%e A224267 ..0..2..1....2..1..0....1..1..2....1..1..0....2..2..2....2..2..1....1..1..0
%e A224267 ..2..2..1....2..1..1....1..2..2....2..1..0....2..2..2....2..2..1....1..1..0
%e A224267 ..2..2..1....2..1..1....2..2..2....2..1..0....2..2..2....2..2..1....1..2..1
%e A224267 ..2..2..2....2..1..1....2..2..2....2..1..0....2..2..2....2..2..1....1..2..2
%e A224267 ..2..2..2....2..2..1....2..2..2....2..1..0....2..2..2....2..2..2....1..2..2
%Y A224267 Row 7 of A224262.
%K A224267 nonn
%O A224267 1,1
%A A224267 _R. H. Hardin_, Apr 02 2013
%E A224267 Name corrected by _Andrew Howroyd_, Mar 18 2025