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 A167187 #15 Oct 08 2024 06:26:09
%S A167187 73,719,743,761,773,797,7103,7109,7127,7151,7193,7211,7229,7283,7307,
%T A167187 7331,7349,7433,7457,7487,7499,7523,7541,7547,7577,7607,7643,7673,
%U A167187 7691,7727,7757,7823,7829,7853,7877,7883,7907,7919,7937,71039,71069,71129,71153
%N A167187 Primes obtained from other primes by prefixing a 7.
%H A167187 Harvey P. Dale, <a href="/A167187/b167187.txt">Table of n, a(n) for n = 1..1000</a>
%e A167187 7151 is a prime obtained by prefixing a 7 to the prime 151.
%t A167187 Select[FromDigits[Join[{7},IntegerDigits[#]]]&/@Prime[Range[250]],PrimeQ] (* _Harvey P. Dale_, Aug 08 2014 *)
%Y A167187 Cf. A000040, A165243, A165292, A165444
%K A167187 base,nonn
%O A167187 1,1
%A A167187 _Parthasarathy Nambi_, Oct 29 2009
%E A167187 a(11)-a(42) from _Vincenzo Librandi_, Nov 01 2009
%E A167187 Corrected (a(15)=7307 inserted) by _Harvey P. Dale_, Aug 08 2014