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 A330157 #24 Dec 23 2024 14:53:46 %S A330157 6,7,0,1,4,5,6,8,6,2,8,3,6,3,7,6,1,3,3,5,2,0,8,8,7,7,3,8,6,4,9,6,7,8, %T A330157 5,8,5,3,0,7,0,6,0,1,1,3,4,9,3,0,9,4,2,1,6,0,5,3,4,8,0,9,8,1,9,1,7,3, %U A330157 7,3,6,2,1,4,0,3,3,6,6,4,6,3,9,8,4,3,3 %N A330157 Decimal expansion of the sum of the reciprocals of A020330. %C A330157 The sum is 0.67014568628363761... . It can be computed relatively efficiently using a variation of the method of Joseph S. Myers (see link). %H A330157 Joseph S. Myers, <a href="https://web.archive.org/web/*/http://list.seqfan.eu/oldermail/seqfan/2014-June/013186.html">Palindome reciprocal sums [sic]</a>, SeqFan Mailing List, June 21, 2014. %e A330157 0.67014568628363761... %Y A330157 Cf. A020330. %K A330157 nonn,cons %O A330157 0,1 %A A330157 _Jeffrey Shallit_, Dec 03 2019