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 A120228 #11 Sep 27 2024 05:39:09
%S A120228 5,9,11,29,35,39,51,65,71,75,95,101,119,129,131,141,149,165,185,215,
%T A120228 219,225,249,261,269,285,299,305,309,329,339,341,371,375,381,401,431,
%U A120228 441,449,459,471,479,491,555,591,599,611,635,639,651,711,725,731,735,761
%N A120228 Numbers k such that 8+k and 8*k+1 are prime.
%H A120228 Harvey P. Dale, <a href="/A120228/b120228.txt">Table of n, a(n) for n = 1..1000</a>
%t A120228 Select[Range[800],AllTrue[{8+#,8#+1},PrimeQ]&] (* _Harvey P. Dale_, May 28 2016 *)
%Y A120228 Cf. A106057-A106066, A120222, A120226, A120227.
%K A120228 nonn
%O A120228 1,1
%A A120228 _Zak Seidov_, Jun 10 2006