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 A167292 #18 Apr 23 2017 01:18:34
%S A167292 1999,2999,4999,8999,13999,19991,19993,19997,25999,32999,35999,41999,
%T A167292 49991,49993,49999,52999,56999,59999,69991,69997,70999,71999,73999,
%U A167292 77999,79997,79999,85999,94999,98999,99901,99907,99923,99929,99961
%N A167292 Primes containing 999 as a substring.
%H A167292 Vincenzo Librandi, <a href="/A167292/b167292.txt">Table of n, a(n) for n = 1..1000</a>
%t A167292 p999Q[n_] := Module[{idn=IntegerDigits[n]}, MemberQ[Partition[idn, 3, 1], {9, 9, 9}]]; Select[Prime[Range[10000]], p999Q] (* _Vincenzo Librandi_, Sep 15 2013 *)
%Y A167292 Superset of A230202.
%Y A167292 Cf. A166571, A166572, A166573, A166579.
%Y A167292 Cf. A243527, A166580, A166581, A166582, A167281, A167282, A167290.
%K A167292 nonn,base
%O A167292 1,1
%A A167292 _Vincenzo Librandi_, Nov 01 2009