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 A032635 #8 Dec 30 2014 20:41:07 %S A032635 0,0,1,3,5,9,13,18,23,29,36,44,52,62,72,82,94,106,119,132,147,162,178, %T A032635 194,211,229,248,268,288,309,331,353,376,400,425,450,476,503,531,559, %U A032635 588,618,648,680,712,744,778,812,847,883,919,956,994,1033,1072 %N A032635 a(n) = floor(n^2 / e). %t A032635 a[n_]:=Floor[(n^2)/E]; (* _Vladimir Joseph Stephan Orlovsky_, Dec 12 2008 *) %K A032635 nonn,easy %O A032635 0,4 %A A032635 _Patrick De Geest_, May 15 1998