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 A120344 #11 Sep 08 2022 08:45:25 %S A120344 2,6,12,20,26,30,36,42,44,50,56,60,62,72,84,86,102,104,110,132,134, %T A120344 140,144,146,162,170,174,176,194,210,212,216,222,224,240,246,254,260, %U A120344 264,270,272,294,302,306,312,326,330,342,366,380,390,396,404,410,420,446 %N A120344 Numbers k such that 23*k + 1 is a prime. %H A120344 Daniel Starodubtsev, <a href="/A120344/b120344.txt">Table of n, a(n) for n = 1..10000</a> %e A120344 If k=86 then 23*k + 1 = 1979 (prime). %t A120344 Select[Range[1000], PrimeQ[23*# + 1] &] (* _Stefan Steinerberger_, Jul 22 2006 *) %o A120344 (Magma) [ n: n in [0..1500] | IsPrime(23*n + 1) ] // _Vincenzo Librandi_, Jan 31 2011 %K A120344 nonn,less %O A120344 1,1 %A A120344 _Parthasarathy Nambi_, Jun 24 2006 %E A120344 More terms from _Stefan Steinerberger_, Jul 22 2006