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 A293919 #6 Oct 25 2017 18:06:58 %S A293919 1,79,2468,59520,1357636,31817497,788783482,20863949689,589285383470, %T A293919 17736904863864,567344416149454,19230190154966409,688795573160438196, %U A293919 26004353625119063230,1032308832642494976585,42994854622890093855000,1874878774341679655658359 %N A293919 Number of linear chord diagrams having n chords and minimal chord length six. %H A293919 Alois P. Heinz, <a href="/A293919/b293919.txt">Table of n, a(n) for n = 6..405</a> %F A293919 a(n) ~ (exp(-5) - exp(-6)) * 2^(n + 1/2) * n^n / exp(n). - _Vaclav Kotesovec_, Oct 25 2017 %Y A293919 Column k=6 of A293881. %K A293919 nonn %O A293919 6,2 %A A293919 _Alois P. Heinz_, Oct 19 2017