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 A223787 #6 Jul 23 2025 04:30:48 %S A223787 148,21904,1455816,61333566,2226551034,82093381460,3219192158949, %T A223787 131884144499255,5492364938094602,229040827160337252, %U A223787 9528541541617112954,395783235818312434134,16434316529261925355928,682564737563907412343494 %N A223787 Number of nX6 0..2 arrays with rows, diagonals and antidiagonals unimodal. %C A223787 Column 6 of A223789 %H A223787 R. H. Hardin, <a href="/A223787/b223787.txt">Table of n, a(n) for n = 1..210</a> %e A223787 Some solutions for n=3 %e A223787 ..0..0..2..1..1..0....0..0..1..1..2..0....0..0..1..1..0..0....0..0..0..0..1..1 %e A223787 ..0..0..2..2..2..2....0..0..2..2..0..0....0..0..0..1..0..0....0..1..1..2..1..1 %e A223787 ..0..2..2..2..2..2....0..0..1..2..1..0....0..0..0..1..1..0....0..0..0..2..1..1 %K A223787 nonn %O A223787 1,1 %A A223787 _R. H. Hardin_ Mar 27 2013