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 A082711 #27 Feb 01 2023 19:57:03 %S A082711 3,5,9,29,65,725,1787,7277,19463,24215,51779,131393 %N A082711 Numbers k such that (65*10^(k-1) + 43)/9 is a depression prime. %C A082711 Prime versus probable prime status and proofs are given in the author's table. %C A082711 a(13) > 2*10^5. - _Tyler Busby_, Feb 01 2023 %D A082711 C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9. %H A082711 Patrick De Geest, <a href="http://www.worldofnumbers.com/deplat.htm#pdp727">PDP Reference Table - 727</a>. %H A082711 Makoto Kamada, <a href="https://stdkmd.net/nrr/7/72227.htm#prime">Prime numbers of the form 722...227</a>. %H A082711 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %F A082711 a(n) = A056257(n) + 2. %e A082711 k=9 -> (65*10^(9-1) + 43)/9 = 722222227. %Y A082711 Cf. A082697-A082720, A056257. %K A082711 nonn,base,hard,more %O A082711 1,1 %A A082711 _Patrick De Geest_, Apr 13 2003 %E A082711 Update from De Geest site by Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008 %E A082711 a(11)=51779 from _Ray Chandler_, Nov 16 2010 %E A082711 Edited by _Ray Chandler_, Nov 05 2014 %E A082711 a(12) from _Tyler Busby_, Feb 01 2023