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 A229107 #11 Sep 13 2013 20:00:39
%S A229107 2,3,5,7,11,101,131,151,313,353,727,757,919,929,10301,10501,10601,
%T A229107 11311,11411,12421,12721,12821,13331,13831,13931,14341,14741,15451,
%U A229107 15551,30103,30203,30403,30703,30803,31013,31513,32323,32423,33533,34543,34843,35053
%N A229107 Palindromic prime time display in hours, minutes, seconds on a six-digit 24-hour digital clock.
%C A229107 Leading zeros are ignored, so the term a(7) = 131, for example, corresponds to the display 00:01:31. Sequence has 69 entries.
%H A229107 Shyam Sunder Gupta, <a href="/A229107/b229107.txt">Table of n, a(n) for n = 1..69</a> (complete sequence)
%e A229107 151 is in the sequence because it is palindromic prime and displays the time as 00:01:51.
%t A229107 palindromicQ[n_] := TrueQ[IntegerDigits[n] == Reverse[IntegerDigits[n]]]; Select[Select[Table[10000 hr + 100 mnt + sec, {hr, 0, 23}, {mnt, 0, 59}, {sec, 0, 59}] // Flatten, palindromicQ@# &], PrimeQ]
%Y A229107 Cf. A222620, A050246.
%K A229107 nonn,fini,full,base
%O A229107 1,1
%A A229107 _Shyam Sunder Gupta_, Sep 13 2013