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 A070851 #12 Apr 13 2022 09:40:16
%S A070851 29,29,43,29,71,43,197,113,127,71,463,337,547,197,211,113,239,127,
%T A070851 1597,281,883,463,967,337,701,547,379,197,2437,211,1303,449,463,239,
%U A070851 491,757,2591,1597,547,281,1723,883,3011,617,631,967,659,337,1373,701,1429
%N A070851 Smallest prime == 1 mod (7n).
%H A070851 Harvey P. Dale, <a href="/A070851/b070851.txt">Table of n, a(n) for n = 1..500</a>
%t A070851 Module[{nn=60,prs=Prime[Range[500]]},Table[SelectFirst[prs,Mod[#,7n]==1&],{n,nn}]] (* _Harvey P. Dale_, Apr 13 2022 *)
%o A070851 (PARI) for(n=1,80,s=1; while((isprime(s)*s-1)%(7*n)>0,s++); print1(s,","))
%Y A070851 Cf. A070846 to A070850 and A070852, A070853.
%Y A070851 Cf. A034694.
%K A070851 nonn
%O A070851 1,1
%A A070851 _Amarnath Murthy_, May 15 2002
%E A070851 More terms from _Benoit Cloitre_, May 18 2002