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 A179915 #6 Feb 22 2013 21:38:32
%S A179915 1373,3137,3797,5237,6173,11173,11311,11353,11719,11731,11971,12113,
%T A179915 12239,12347,12377,12953,12973,13127,13177,13217,13537,13597,13679,
%U A179915 13709,13711,13723,13729,13751,13757,13759,13799,13967,13997,15137
%N A179915 Primes with seven embedded primes.
%C A179915 A079066(a(n)) = 7.
%t A179915 f[n_] := Block[ {id = IntegerDigits@n}, len = Length@ id - 1; Count[ PrimeQ@ Union[ FromDigits@# & /@ Flatten[ Table[ Partition[ id, k, 1], {k, len}], 1]], True] + 1]; Select[ Prime@ Range@ 1770, f@# == 8 &]
%o A179915 (Haskell)
%o A179915 import Data.List (elemIndices)
%o A179915 a179915 n = a179915_list !! (n-1)
%o A179915 a179915_list = map (a000040 . (+ 1)) $ elemIndices 7 a079066_list
%o A179915 -- _Reinhard Zumkeller_, Jul 19 2011
%Y A179915 Cf. A039996, A079397, A033274, A034844, A092621, A179909 - A179919, A033274.
%K A179915 base,nonn
%O A179915 1,1
%A A179915 _Robert G. Wilson v_, Aug 01 2010