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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A223786 Number of nX5 0..2 arrays with rows, diagonals and antidiagonals unimodal.

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%I A223786 #6 Jul 23 2025 04:30:42
%S A223786 86,7396,334230,11012718,343454446,11150023974,377163884938,
%T A223786 12972494260444,446829906314726,15355124632228358,526923763141934474,
%U A223786 18077525750169013666,620311802079829363850,21288659601586901388818
%N A223786 Number of nX5 0..2 arrays with rows, diagonals and antidiagonals unimodal.
%C A223786 Column 5 of A223789
%H A223786 R. H. Hardin, <a href="/A223786/b223786.txt">Table of n, a(n) for n = 1..210</a>
%e A223786 Some solutions for n=3
%e A223786 ..0..0..2..1..0....0..0..1..1..0....0..0..1..1..1....0..0..2..1..0
%e A223786 ..0..0..1..2..2....0..0..2..1..1....1..1..2..1..0....0..2..2..2..1
%e A223786 ..0..0..1..2..1....0..0..0..2..2....0..0..2..2..0....0..1..1..1..2
%K A223786 nonn
%O A223786 1,1
%A A223786 _R. H. Hardin_ Mar 27 2013

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