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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.

A201699 Number of nX7 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.

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%I A201699 #7 Jul 22 2025 16:19:19
%S A201699 3,60,3838,607919,142436489,27102769900,3262897246338,253484699853930,
%T A201699 13657827589827288,542530203631847499,16634470482072064655,
%U A201699 407700696414920035296,8211702473582080609860,139013768818199221546289
%N A201699 Number of nX7 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.
%C A201699 Column 7 of A201700
%H A201699 R. H. Hardin, <a href="/A201699/b201699.txt">Table of n, a(n) for n = 1..22</a>
%e A201699 Some solutions for n=3
%e A201699 ..0..1..1..1..1..2..2....0..0..0..0..0..2..2....0..1..1..1..1..1..1
%e A201699 ..2..0..0..1..2..0..0....0..2..2..2..2..0..0....1..0..0..0..1..1..1
%e A201699 ..2..2..2..1..0..0..0....2..1..1..1..1..0..0....2..1..1..1..0..0..0
%K A201699 nonn
%O A201699 1,1
%A A201699 _R. H. Hardin_ Dec 03 2011

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