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 A020105 #6 Mar 30 2012 18:36:22 %S A020105 1,1,2,5,20,95,560,3858,30478,271253,2685396,29270807,348322597, %T A020105 4493361501,62457724854,930620100319,14796859595059,250066927156482, %U A020105 4476197996101024,84600142126309336,1683542828313555775 %N A020105 Ceiling of GAMMA(n+9/10)/GAMMA(9/10). %p A020105 Digits := 64:f := proc(n,x) ceil(GAMMA(n+x)/GAMMA(x)); end; %K A020105 nonn %O A020105 0,3 %A A020105 _Simon Plouffe_