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 A167282 #10 Nov 01 2022 12:41:02
%S A167282 1777,2777,11777,19777,22777,26777,27773,27779,41777,43777,44777,
%T A167282 47777,47779,50777,53777,57773,65777,67777,68777,71777,76777,77711,
%U A167282 77713,77719,77723,77731,77743,77747,77761,77773,77783,77797,79777,80777
%N A167282 Primes containing 777 as a substring.
%H A167282 Vincenzo Librandi, <a href="/A167282/b167282.txt">Table of n, a(n) for n = 1..1000</a>
%F A167282 a(n) ~ n log n. - _Charles R Greathouse IV_, Nov 01 2022
%t A167282 p777Q[n_] := Module[{idn=IntegerDigits[n]}, MemberQ[Partition[idn, 3, 1], {7, 7, 7}]]; Select[Prime[Range[10000]], p777Q] (* _Vincenzo Librandi_, Sep 15 2013 *)
%Y A167282 Cf. A166571-A166573, A166579-A166582, A167281.
%K A167282 nonn,base
%O A167282 1,1
%A A167282 _Vincenzo Librandi_, Nov 01 2009