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 A098419 #4 Feb 16 2025 08:32:54 %S A098419 2,3,29,31,53,59,61,79,83,89,127,131,137,139,149,151,157,163,167,173, %T A098419 179,181,211,239,241,251,257,263,269,271,293,331,337,359,367,373,379, %U A098419 383,389,397,401,409,419,421,431,433,439,443,449,479,487,491,499,503 %N A098419 Primes not occurring in prime triples (p,q,r) with p<q<r=p+6. %C A098419 A098418(a(n)) = 0; complement of A098420 in A000040. %H A098419 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeTriplet.html">Prime Triplet</a> %K A098419 nonn %O A098419 1,1 %A A098419 _Reinhard Zumkeller_, Sep 07 2004