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 A294002 #4 Oct 21 2017 20:08:18 %S A294002 1,1,3,15,105,945,10395,135135,2027025,34459425,654729075,4583103525, %T A294002 34788783519,286302699633,2541730502259,24202811629589, %U A294002 245427373661087,2620070906538825,28854865779691475,317259847008270825,3336850194636528659,32503486859882091945 %N A294002 Number of linear chord diagrams having n chords and no chord length larger than ten. %H A294002 Alois P. Heinz, <a href="/A294002/b294002.txt">Table of n, a(n) for n = 0..1000</a> %Y A294002 Column k=10 of A293960. %K A294002 nonn,easy %O A294002 0,3 %A A294002 _Alois P. Heinz_, Oct 21 2017