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 A082714 #18 Mar 27 2020 20:10:14 %S A082714 5,7,55,97,455,575,3385,11441,12625,19447,35461,81215,95327 %N A082714 Numbers n such that 2*(10^n-1)/3+(10^(n-1)+1) or (69*10^(n-1)+3)/9 is a plateau or depression prime. %C A082714 Prime versus probable prime status and proofs are given in the author's table. %D A082714 C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9. %H A082714 Patrick De Geest, <a href="http://www.worldofnumbers.com/deplat.htm#pdp767">PDP Reference Table - 767</a>. %H A082714 Makoto Kamada, <a href="https://stdkmd.net/nrr/7/76667.htm#prime">Prime numbers of the form 766...667</a>. %H A082714 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %e A082714 7 is a term because 2*(10^7-1)/3+(10^6+1) = 7666667. %Y A082714 Cf. A082697-A082720, A056260. %K A082714 nonn,base,more %O A082714 1,1 %A A082714 _Patrick De Geest_, Apr 13 2003 %E A082714 35461 from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008 %E A082714 Added two more terms from PDP table, by _Patrick De Geest_, Nov 04 2014 %E A082714 Edited by _Ray Chandler_, Nov 05 2014 %E A082714 Name clarified by _Michel Marcus_, Mar 27 2020