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 A062230 #14 Oct 31 2019 01:24:50 %S A062230 5,17,209,1295 %N A062230 Numbers k such that the smoothly undulating palindromic number (95*10^k - 59)/99 is a prime. %C A062230 Prime versus probable prime status and proofs are given in the author's table. %C A062230 No further terms < 100000. - _Ray Chandler_, Aug 17 2011 %H A062230 Patrick De Geest, <a href="http://www.worldofnumbers.com/undulat.htm#supp959">SUPP Reference Table - 959</a> %H A062230 <a href="/index/Pri#pri_supp">Index entries for sequences related to smoothly undulating palindromic primes</a> %e A062230 k=17 -> (95*10^17 - 59)/99 = 95959595959595959. %Y A062230 Cf. A062209-A062232, A059758, A032758. %K A062230 nonn,base,more %O A062230 1,1 %A A062230 _Patrick De Geest_ and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001 %E A062230 Edited by _Ray Chandler_, Aug 17 2011