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 A135115 #25 Jan 25 2022 08:46:28 %S A135115 1,2,3,11,12,37,42,64,101,131,170,366,404,771,1454,1696,4415,5208, %T A135115 9027,10978,11264,11651,14432,20655,28220,34623,62523,63986 %N A135115 Integers k such that 10^k + 63 is a prime number. %C A135115 If another term exists it is > 100000. - _Robert Price_, Apr 25 2011 %C A135115 See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10063". %H A135115 Makoto Kamada, <a href="https://stdkmd.net/nrr/prime/">List of near-repdigit-related prime numbers</a>. %H A135115 <a href="/index/Pri#Pri_rep">Index entries for primes involving repunits</a>. %e A135115 3 is a term because 10^3 + 63 = 1000 + 63 = 1063, which is prime. %t A135115 Select[Range[2000],PrimeQ[10^#+63]&] (* _Harvey P. Dale_, Jul 24 2009 *) %Y A135115 Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054. %K A135115 nonn,more %O A135115 1,2 %A A135115 Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008 %E A135115 Two additional terms from _Harvey P. Dale_, Jul 24 2009 %E A135115 One more term from _Robert Price_, Mar 22 2010 %E A135115 Eight more terms from _Robert Price_, Aug 14 2010 %E A135115 Edited by _Ray Chandler_, Dec 23 2010 %E A135115 a(27)=62523, a(28)=63986 from _Robert Price_, Jan 29 2011