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 A098422 #8 Feb 16 2025 08:32:54 %S A098422 7,19,41,43,101,109,193,197,227,229,311,313,461,463,823,827,857,859, %T A098422 881,883,1091,1093,1301,1303,1427,1429,1483,1489,1871,1877,1997,1999, %U A098422 2083,2087,2687,2689,3253,3257,3461,3467,4517,4519,4787,4789,5231,5233,5651 %N A098422 Primes occurring in exactly two prime triples (p,q,r) with p<q<r=p+6. %C A098422 A098418(a(n)) = 2; subsequence of A098420. %H A098422 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeTriplet.html">Prime Triplet</a> %t A098422 Select[Tally[Flatten[Select[Partition[Prime[Range[800]],3,1],#[[3]]- #[[1]] == 6&]]],#[[2]]==2&][[All,1]] (* _Harvey P. Dale_, Jun 01 2019 *) %Y A098422 Cf. A098419, A098421, A098423. %K A098422 nonn %O A098422 1,1 %A A098422 _Reinhard Zumkeller_, Sep 07 2004