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 A293923 #6 Oct 25 2017 18:06:13 %S A293923 1,1279,210308,16616820,938674704,44808906240,1968764070096, %T A293923 83741573885052,3550701549583204,152621531791333545, %U A293923 6715538352190953498,304192204692846166233,14228203377114098086822,688242816096454213285132,34448710283688839203990152 %N A293923 Number of linear chord diagrams having n chords and minimal chord length ten. %H A293923 Alois P. Heinz, <a href="/A293923/b293923.txt">Table of n, a(n) for n = 10..200</a> %F A293923 a(n) ~ (exp(-9) - exp(-10)) * 2^(n + 1/2) * n^n / exp(n). - _Vaclav Kotesovec_, Oct 25 2017 %Y A293923 Column k=10 of A293881. %K A293923 nonn %O A293923 10,2 %A A293923 _Alois P. Heinz_, Oct 19 2017