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 A067913 #6 Mar 30 2012 18:38:52 %S A067913 1,28,30,52,231,277,523,2278,22749,48854,371305,1447522,1726931, %T A067913 1947729,3657998,6964377,14393316,101963994,237690542,487815056, %U A067913 1525407389,2636206007,14146907176,2348836787752,5367069498863,1710637374747486 %N A067913 Engel expansion of Riemann zeta(5)=sum(i>0,1/i^5). %Y A067913 See A006784 for explanation of Engel expansions. %K A067913 easy,nonn %O A067913 1,2 %A A067913 _Benoit Cloitre_, Mar 03 2002