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 A135118 #18 Jan 25 2022 08:36:30 %S A135118 1,2,3,13,19,81,658,1009,1070,1731,2899,4237,5499,18628,28699,47026 %N A135118 Integers k such that 10^k + 51 is a prime number. %C A135118 If more terms exist, then they are > 39456. - _Robert Price_, Aug 14 2010 %C A135118 See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10051". %H A135118 Makoto Kamada, <a href="https://stdkmd.net/nrr/prime/">List of near-repdigit-related prime numbers</a>. %H A135118 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %e A135118 3 is a term because 10^3 + 51 = 1000 + 51 = 1051, which is prime. %Y A135118 Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054. %K A135118 nonn,more %O A135118 1,2 %A A135118 Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008 %E A135118 a(8)-a(15) from _Robert Price_, Aug 14 2010 %E A135118 Edited by _Ray Chandler_, Dec 23 2010 %E A135118 a(16) from _Robert Price_, Dec 27 2010