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 A229106 #14 Sep 13 2013 20:35:49
%S A229106 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,101,103,107,109,113,
%T A229106 127,131,137,139,149,151,157,211,223,227,229,233,239,241,251,257,307,
%U A229106 311,313,317,331,337,347,349,353,359,401,409,419,421,431,433,439,443
%N A229106 Prime time display in hours, minutes, seconds on a six-digit 24-hour digital clock.
%C A229106 Leading zeros are ignored, so the term a(3) = 5, for example, corresponds to the display 00:00:05. Sequence has 7669 entries. The first 211 terms are the same as in A050246.
%H A229106 Shyam Sunder Gupta, <a href="/A229106/b229106.txt">Table of n, a(n) for n = 1..7669</a> (complete sequence)
%e A229106 109 is in the sequence because it is prime and display the time as 00:01:09.
%t A229106 Select[Flatten[Table[10000*hr + 100*mnt + sec, {hr, 0, 23}, {mnt, 0, 59}, {sec, 0, 59}]], PrimeQ]
%Y A229106 Cf. A050246 (primes displayed on a 4-digit clock).
%K A229106 nonn,fini,full,base
%O A229106 1,1
%A A229106 _Shyam Sunder Gupta_, Sep 13 2013