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 A075282 #11 Jul 13 2025 13:29:22
%S A075282 21,217,2191,2933,3073,3353,7063,7091,8813,9079,9233,9527,9569,10493,
%T A075282 10717,11851,12131,16667,17857,18263,18347,19243,19733,22421,23093,
%U A075282 24703,24787,25417,27349,28637,32347,32473,33607,33691,35273,35413
%N A075282 Interprimes which are of the form s*prime, s=7.
%C A075282 Interprimes which are of the form s*prime are in A075277-A075296 (s = 2-21). Case s = 1 is impossible.
%H A075282 Harvey P. Dale, <a href="/A075282/b075282.txt">Table of n, a(n) for n = 1..1000</a>
%e A075282 2191 is an interprime and 2191/7 = 317 is prime.
%t A075282 s=7; Select[Table[(Prime[n+1]+Prime[n])/2, {n, 2, 1000}], PrimeQ[ #/s]&]
%t A075282 Select[Mean/@Partition[Prime[Range[4000]],2,1],PrimeQ[#/7]&] (* _Harvey P. Dale_, Jul 13 2025 *)
%Y A075282 Cf. A075277-A075296.
%K A075282 easy,nonn
%O A075282 1,1
%A A075282 _Zak Seidov_, Sep 12 2002