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A223924 Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing.

%I A223924 #8 Jul 23 2025 04:39:31
%S A223924 36,1296,26494,359344,3588729,28247478,183720802,1022160764,
%T A223924 4994941017,21887522070,87447220301,322906269126,1114442061385,
%U A223924 3628609366226,11233293675288,33279853366178,94865889314403,261354658486111
%N A223924 Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing.
%C A223924 Row 7 of A223918
%H A223924 R. H. Hardin, <a href="/A223924/b223924.txt">Table of n, a(n) for n = 1..210</a>
%H A223924 R. H. Hardin, <a href="/A223924/a223924.txt">Empirical polynomial of degree 28</a>
%F A223924 Empirical polynomial of degree 28 (see link above)
%e A223924 Some solutions for n=3
%e A223924 ..0..0..0....1..0..0....0..0..0....1..0..0....1..0..0....0..0..0....0..0..0
%e A223924 ..0..0..0....1..0..0....1..0..0....1..0..0....1..0..0....0..1..0....1..0..0
%e A223924 ..0..1..0....1..1..0....1..0..0....1..0..0....2..0..0....0..1..1....1..0..0
%e A223924 ..1..1..0....1..2..0....1..0..0....1..0..0....2..0..0....1..1..1....1..0..0
%e A223924 ..1..1..0....2..2..1....2..0..0....1..0..0....2..0..0....1..1..2....2..2..1
%e A223924 ..2..1..0....2..2..1....2..1..0....2..2..0....2..1..1....1..1..2....2..2..1
%e A223924 ..2..2..1....2..2..2....2..2..1....2..2..2....2..2..2....1..2..2....2..2..1
%K A223924 nonn
%O A223924 1,1
%A A223924 _R. H. Hardin_ Mar 29 2013