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 A118849 #11 Sep 03 2017 11:34:31 %S A118849 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,101,107,113,137,149, %T A118849 211,229,311,313,317,331,347,349,353,359,401,431,443,547,607,613,619, %U A118849 641,659,701,719,743,811,823,829,907,929,937,947,953,1013,1019,1031,1117 %N A118849 Digital clock primes such that the number of minutes past midnight is also prime. %C A118849 The number of minutes past midnight represented by each of the times here can be found in A118850. %H A118849 Nathaniel Johnston, <a href="/A118849/b118849.txt">Table of n, a(n) for n = 1..83</a> (full sequence) %F A118849 a(n) = A118850(n) + floor(A118850(n)/60)*40. %p A118849 for h from 0 to 23 do for m from 0 to 59 do t:=100*h+m: if(isprime(60*h+m) and isprime(t))then printf("%d, ", t): fi: od: od: # _Nathaniel Johnston_, May 17 2011 %Y A118849 Cf. A050246, A118848, A118850. %K A118849 nonn,base,easy,fini,full %O A118849 1,1 %A A118849 _Carl R. White_, May 01 2006