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 A073422 #2 Mar 30 2012 18:51:38 %S A073422 1,1,2,5,55,9999,3620211522,-26596490130011501642, %T A073422 6462025287494698350477135653962718736877, %U A073422 -532695733923048954868620962844302990205269539900643893905567041090276924142488084 %N A073422 e = 1/a(0)+1/a(1)+1/a(2)+1/a(3)+... with each term a(n) being a positive or negative integer chosen so as to minimize the absolute difference between e and the partial sum. %e A073422 a(4)=55 since e-(1/1)-(1/1)-(1/2)-(1/5)=0.0182818... is closer to 1/55=0.0181818... than to 1/54=0.0185185... %Y A073422 Cf. A001467, A006525, A014015. %K A073422 sign %O A073422 0,3 %A A073422 _Henry Bottomley_, Jul 30 2002