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 A135114 #24 Jan 25 2022 08:46:53 %S A135114 1,3,4,5,10,11,16,35,49,69,119,223,400,775,1003,1523,2225,6793,7018, %T A135114 13600,76801 %N A135114 Integers k such that 10^k + 69 is a prime number. %C A135114 Next term in sequence, if one exists is > 100000. - _Robert Price_, Apr 25 2011 %C A135114 See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10069". %H A135114 Makoto Kamada, <a href="https://stdkmd.net/nrr/prime/">List of near-repdigit-related prime numbers</a>. %H A135114 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %e A135114 5 is a term because 10^5 + 69 = 100000 + 69 = 100069, which is prime. %Y A135114 Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054. %K A135114 nonn,more %O A135114 1,2 %A A135114 Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008 %E A135114 Term 13600 from _Robert Price_, Mar 22 2010 %E A135114 Terms 1003, 1523, 2225, 6793, 7018 inserted by _Robert Price_, Oct 31 2010 %E A135114 Edited by _Ray Chandler_, Dec 23 2010 %E A135114 a(21)=76801 from _Robert Price_, Mar 03 2011