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A224315 Number of 7Xn 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

%I A224315 #7 Jul 23 2025 05:06:16
%S A224315 2187,419904,4634768,22071219,80083648,268379906,911404794,3202146197,
%T A224315 11485486125,41212527412,145413457614,498294091308,1645129036705,
%U A224315 5209884539118,15798173688229,45874155195909,127717720870044
%N A224315 Number of 7Xn 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
%C A224315 Row 7 of A224310
%H A224315 R. H. Hardin, <a href="/A224315/b224315.txt">Table of n, a(n) for n = 1..159</a>
%H A224315 R. H. Hardin, <a href="/A224315/a224315.txt">Empirical polynomial of degree 28</a>
%F A224315 Empirical polynomial of degree 28 (see link above)
%e A224315 Some solutions for n=3
%e A224315 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e A224315 ..0..0..0....0..0..1....0..0..0....0..0..1....0..0..0....0..0..2....0..1..1
%e A224315 ..0..0..1....0..2..1....0..0..2....0..1..2....1..1..0....0..2..0....2..1..0
%e A224315 ..0..2..0....2..2..2....0..2..2....2..2..1....1..0..0....2..2..0....1..0..0
%e A224315 ..2..0..0....2..2..2....2..2..0....2..1..1....2..2..0....2..2..1....0..0..0
%e A224315 ..1..0..0....2..2..0....2..1..0....2..1..0....2..0..0....2..1..0....1..0..0
%e A224315 ..0..2..0....2..2..0....1..2..1....1..1..1....0..2..0....2..2..1....2..2..1
%K A224315 nonn
%O A224315 1,1
%A A224315 _R. H. Hardin_ Apr 03 2013