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.
%I A212932 #6 Aug 19 2022 14:21:53 %S A212932 1,63,18226,14177855,23124921876,68264066143602,330676305397366860, %T A212932 2450628904209116751423,26359630332235218287361280, %U A212932 394964706663355785627860751188,7977079877065700492793254299414812 %N A212932 Number of 3 X n 0..n-1 arrays with no column j greater than column j-1 in all rows. %C A212932 Row 3 of A212930. %H A212932 R. H. Hardin, <a href="/A212932/b212932.txt">Table of n, a(n) for n = 1..16</a> %e A212932 Some solutions for n=3 %e A212932 ..1..1..1....0..0..0....1..1..1....0..1..2....0..1..1....2..1..0....1..0..1 %e A212932 ..2..1..1....1..2..0....1..0..1....1..2..0....0..0..2....2..1..2....1..2..2 %e A212932 ..2..1..1....1..2..2....2..1..2....0..0..0....0..0..2....2..1..1....2..1..2 %Y A212932 Cf. A212930. %K A212932 nonn %O A212932 1,2 %A A212932 _R. H. Hardin_, May 31 2012