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 A222859 #6 Jul 23 2025 03:10:40 %S A222859 20,123,2460,22620,452400,5631696,123774620,1750579287,38886003660, %T A222859 616343677120,13645322944000,228861094261117,5026600983006000, %U A222859 87653141405083368,1904562716219017600,34122352692143937360 %N A222859 Number of nX5 0..1 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope. %C A222859 Column 5 of A222862 %H A222859 R. H. Hardin, <a href="/A222859/b222859.txt">Table of n, a(n) for n = 1..19</a> %e A222859 Some solutions for n=3 %e A222859 ..0..0..0..0..1....0..1..0..0..1....0..0..0..1..0....0..0..0..0..1 %e A222859 ..1..0..0..0..1....1..0..0..0..1....1..0..1..0..1....1..1..0..1..1 %e A222859 ..1..1..0..1..1....0..1..0..0..1....0..1..1..1..0....0..0..1..1..1 %K A222859 nonn %O A222859 1,1 %A A222859 _R. H. Hardin_ Mar 07 2013