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 A023288 #19 Sep 08 2022 08:44:47 %S A023288 2,11,13,31,71,83,151,163,193,197,317,347,373,503,577,811,911,919, %T A023288 1049,1051,1201,1423,1721,1907,2089,2243,2543,2719,2963,3529,3583, %U A023288 3607,3797,4091,4153,4217,4243,4409,4591,4637,4783,5209,5557,5783,5849,5923,6091 %N A023288 Primes that remain prime through 3 iterations of function f(x) = 6x + 5. %C A023288 Primes p such that 6*p+5, 36*p+35 and 216*p+215 are also primes. - _Vincenzo Librandi_, Aug 04 2010 %H A023288 John Cerkan, <a href="/A023288/b023288.txt">Table of n, a(n) for n = 1..10000</a> %o A023288 (Magma) [n: n in [1..150000] | IsPrime(n) and IsPrime(6*n+5) and IsPrime(36*n+35) and IsPrime(216*n+215)] // _Vincenzo Librandi_, Aug 04 2010 %Y A023288 Subsequence of A023221, A023257, and A059325. %K A023288 nonn %O A023288 1,1 %A A023288 _David W. Wilson_