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 A082717 #13 Nov 10 2019 01:33:50 %S A082717 3,247,1141,10395,43881 %N A082717 Numbers k such that (82*10^(k-1) + 71)/9 is a depression prime. %C A082717 Prime versus probable prime status and proofs are given in the author's table. %D A082717 C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9. %H A082717 Patrick De Geest, <a href="http://www.worldofnumbers.com/deplat.htm#pdp919">PDP Reference Table - 919</a>. %H A082717 Makoto Kamada, <a href="https://stdkmd.net/nrr/9/91119.htm#prime">Prime numbers of the form 911...119</a>. %H A082717 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %e A082717 k=3 -> (82*10^(3-1) + 71)/9 = 919. %Y A082717 Cf. A082697-A082720, A056264. %K A082717 nonn,base,more %O A082717 1,1 %A A082717 _Patrick De Geest_, Apr 13 2003 %E A082717 One more term from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008 %E A082717 Edited by _Ray Chandler_, Nov 04 2014