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 A082718 #17 Nov 10 2019 01:33:54 %S A082718 3,7,13,111,3609,37785 %N A082718 Numbers k such that (83*10^(k-1) + 61)/9 is a depression prime. %C A082718 Prime versus probable prime status and proofs are given in the author's table. %D A082718 C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9. %H A082718 Patrick De Geest, <a href="http://www.worldofnumbers.com/deplat.htm#pdp929">PDP Reference Table - 929</a>. %H A082718 Makoto Kamada, <a href="https://stdkmd.net/nrr/9/92229.htm#prime">Prime numbers of the form 922...229</a>. %H A082718 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %F A082718 a(n) = A056265(n) + 2. %e A082718 k=13 -> (83*10^(13-1) + 61)/9 = 9222222222229. %Y A082718 Cf. A082697-A082720, A056265, A068651. %K A082718 nonn,base,more %O A082718 1,1 %A A082718 _Patrick De Geest_, Apr 13 2003 %E A082718 37785 from _Patrick De Geest_, Jun 26 2005 %E A082718 Edited by _Ray Chandler_, Oct 20 2010 %E A082718 Edited by _Ray Chandler_, Nov 04 2014