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 A338342 #9 Oct 28 2020 15:33:49 %S A338342 5,33,42,54,73,95,120,145,152,175,190,236,264,270,294,325,335,341,372, %T A338342 381,387,448,474,480,552,562,568,586,605,649,655,688,739,748,768,790, %U A338342 811,817,921,934,973,979,1001,1027,1033,1065,1071,1106,1135,1152,1168,1200,1219,1247,1264 %N A338342 Numbers k such that A338338(k) is a prime p in the middle of a run of three terms in A338338 that are divisible by p. %H A338342 Rémy Sigrist, <a href="/A338342/b338342.txt">Table of n, a(n) for n = 1..10000</a> %H A338342 Rémy Sigrist, <a href="/A338342/a338342.gp.txt">PARI program for A338342</a> %o A338342 (PARI) See Links section. %Y A338342 Cf. A338338-A338349. %K A338342 nonn %O A338342 1,1 %A A338342 _N. J. A. Sloane_, Oct 27 2020