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 A135132 #19 Jan 17 2019 13:44:08 %S A135132 1,2,8,11,145,695,1099,3518,6211,13015 %N A135132 Integers n such that 10^n + 73 is a prime number. %C A135132 a(5) to a(7) were certified prime with PRIMO. - _Bernardo Boncompagni_, Nov 07 2008 %C A135132 The next term (if one exists) is > 100000. - _Robert Price_, Apr 25 2011 %C A135132 See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10073". %H A135132 Makoto Kamada, <a href="https://stdkmd.net/nrr/prime/">List of near-repdigit-related prime numbers</a>. %H A135132 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %e A135132 8 is a member because 10^8+73 = 100000000+73 = 100000073, which is prime. %t A135132 Select[Range[1000], PrimeQ[10^# + 73] &] (* _G. C. Greubel_, Sep 28 2016 *) %Y A135132 Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054. %K A135132 more,nonn %O A135132 1,2 %A A135132 Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008 %E A135132 a(7) from _Bernardo Boncompagni_, Nov 07 2008 %E A135132 Added term 13015. _Robert Price_, Mar 22 2010 %E A135132 Added two terms: 3518,6211. _Robert Price_, Oct 10 2010 %E A135132 Edited by _Ray Chandler_, Dec 23 2010