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 A032722 #14 Aug 13 2024 11:13:54
%S A032722 4,5,7,8,10,14,16,19,22,23,29,34,38,40,41,43,47,50,52,55,64,65,71,73,
%T A032722 80,82,85,86,89,92,98,104,113,115,119,121,125,128,130,134,140,142,143,
%U A032722 148,151,157,160,163,164,176,178,179,181,182,190,197,202,205,206,212
%N A032722 Numbers k such that k prefixed by '5' and followed by '7' is prime.
%t A032722 Select[Range[250],PrimeQ[FromDigits[Join[{5},IntegerDigits[#], {7}]]]&] (* _Harvey P. Dale_, Jul 24 2011 *)
%Y A032722 Cf. A032702-A032733.
%K A032722 nonn,base
%O A032722 1,1
%A A032722 _Patrick De Geest_, May 15 1998
%E A032722 Offset changed by _Andrew Howroyd_, Aug 13 2024