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A224280 Number of nX7 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

%I A224280 #6 Jul 23 2025 05:04:19
%S A224280 1163,180821,8626382,233090092,4728056658,86539248276,1597855917875,
%T A224280 31198793873704,648539832987579,14190379537730766,321738654013526452,
%U A224280 7458658599338643026,175162125039011466648,4143668812111247607851
%N A224280 Number of nX7 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
%C A224280 Column 7 of A224281
%H A224280 R. H. Hardin, <a href="/A224280/b224280.txt">Table of n, a(n) for n = 1..210</a>
%e A224280 Some solutions for n=3
%e A224280 ..0..0..0..0..1..0..0....0..0..0..0..2..1..1....0..0..0..0..1..1..2
%e A224280 ..0..0..0..1..1..2..3....0..0..0..2..1..1..1....0..0..0..3..2..2..0
%e A224280 ..0..0..2..2..3..3..2....0..0..2..3..2..1..0....0..0..3..3..3..2..0
%K A224280 nonn
%O A224280 1,1
%A A224280 _R. H. Hardin_ Apr 02 2013