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 A222957 #6 Jul 23 2025 03:19:02 %S A222957 8,8,64,64,512,512,8000,5832,140608,110592,3511808,2628072,105154048, %T A222957 78402752,3511808000,2697228288,128329125184,100674415808, %U A222957 5010745148928,4007556327104,205462555328512,167502838946624,8774957874376000 %N A222957 Number of nX5 0..1 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope. %C A222957 Column 5 of A222959 %H A222957 R. H. Hardin, <a href="/A222957/b222957.txt">Table of n, a(n) for n = 1..53</a> %e A222957 Some solutions for n=4 %e A222957 ..0..1..1..1..0....1..1..1..1..1....0..0..1..0..0....0..0..0..0..0 %e A222957 ..0..1..0..1..0....0..1..0..1..0....1..1..1..1..1....0..1..0..1..0 %e A222957 ..0..1..0..1..0....0..1..0..1..0....1..1..1..1..1....0..1..0..1..0 %e A222957 ..0..1..1..1..0....1..1..1..1..1....0..0..1..0..0....0..0..0..0..0 %K A222957 nonn %O A222957 1,1 %A A222957 _R. H. Hardin_ Mar 10 2013