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 A158467 #11 Nov 20 2014 17:41:00 %S A158467 1,1,3,7,105,651,1953,35433,3011805,513010785,376207909,70008871793, %T A158467 40955189998905,25804920098540835,158515937748179415, %U A158467 33510269239965128331,43060695973355189905335,332000498936684593887186105,2703432634198717407367086855 %N A158467 Denominators of EH(n), the expected value of the height of a probabilistic skip list with n elements and p=1/2. %H A158467 Alois P. Heinz, <a href="/A158467/b158467.txt">Table of n, a(n) for n = 0..100</a> %p A158467 seq(denom(EH(n)), n=0..20); %Y A158467 See A158466 for more information on EH(n). %K A158467 frac,nonn %O A158467 0,3 %A A158467 _Alois P. Heinz_, Mar 19 2009