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 A222971 #12 Dec 04 2021 08:34:35 %S A222971 1,6,96,576,5180,28836,222887,1241310,8712264,48837168,328280478, %T A222971 1854039060,12126536066,69047705664,443482507552,2544063717888, %U A222971 16136462307440,93109093464048,585311170019020,3393940344415872 %N A222971 Number of 3 X (n+1) 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope. %H A222971 R. H. Hardin, <a href="/A222971/b222971.txt">Table of n, a(n) for n = 1..24</a> %e A222971 Some solutions for n=3: %e A222971 0 1 0 1 0 0 0 1 0 1 1 1 0 0 0 1 0 0 1 1 %e A222971 0 1 1 1 0 1 1 1 0 0 0 1 0 0 1 1 0 1 1 1 %e A222971 0 1 0 1 0 0 0 1 0 1 1 1 0 1 0 1 0 1 1 1 %Y A222971 Row 3 of A222969. %K A222971 nonn %O A222971 1,2 %A A222971 _R. H. Hardin_, Mar 10 2013