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 A098423 #21 Feb 16 2025 08:32:54 %S A098423 11,13,17,103,107,1487,1873,3463,5653,15733,16063,16067,19423,19427, %T A098423 21017,22277,43783,43787,55337,79693,88813,101113,144167,165707, %U A098423 166847,195737,201827,225347,247607,257863,266683,268817,276043,284743 %N A098423 Primes occurring in exactly three prime triples (p,q,r) with p<q<r=p+6. %C A098423 A098418(a(n)) = 3; subsequence of A098420. %C A098423 This sequence consists of all integers of the form (prime(m)*prime(m+4)+36)/prime(m+2), for m>0, where prime(m) = A000040(m). Also note that the integers resulting from that rule equal prime(m+2), therefore a(n) also consists of all integers of the form sqrt[prime(m)*prime(m+4)+36]. - _Richard R. Forberg_, Jan 11 2016 %H A098423 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeTriplet.html">Prime Triplet</a> %e A098423 A000040(27)=103: A007529(11)=103, A098414(10)=103 and A098415(9)=103, therefore 103 is a term. %Y A098423 Cf. A098419, A098421, A098422. %K A098423 nonn %O A098423 1,1 %A A098423 _Reinhard Zumkeller_, Sep 07 2004