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 A109832 #7 Feb 16 2025 08:32:58 %S A109832 1,2,2,4,6,6,8,6,6,14,18,12,12,18,12,18,24,30,34,30,6,12,42,30,30,30, %T A109832 18,48,30,30,30,66,36,48,24,30,12,54,42,78,54,60,42,48,60,104,72,30, %U A109832 66,60,66,30,60,30,12,6,30,120,90,60,60,78,60,102,90,90,138,108,36 %N A109832 Number d such that (A109833(n)+k*d: 0<=k<=A109831(n)) is an arithmetic progression of primes. %C A109832 a(n) = (A000040(n) - A109833(n)) / A109831(n). %H A109832 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeArithmeticProgression.html">Prime Arithmetic Progression</a> %H A109832 <a href="/index/Pri#primes_AP">Index entries for sequences related to primes in arithmetic progressions</a> %K A109832 nonn %O A109832 2,2 %A A109832 _Reinhard Zumkeller_, Jul 04 2005