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 A023316 #20 Sep 08 2022 08:44:47 %S A023316 7,43,883,2269,2917,7621,15541,15937,36541,38113,54787,60961,67033, %T A023316 71359,77491,79693,82531,84967,112621,129589,176461,185683,192547, %U A023316 239671,248071,267373,271489,271549,310231,316471,340957,343267,350617,382303 %N A023316 Primes that remain prime through 4 iterations of function f(x) = 5x + 8. %C A023316 Primes p such that 5*p+8, 25*p+48, 125*p+248 and 625*p+1248 are also primes. - _Vincenzo Librandi_, Aug 04 2010 %H A023316 John Cerkan, <a href="/A023316/b023316.txt">Table of n, a(n) for n = 1..10000</a> %F A023316 a(n) == 1 or 19 (mod 42) for n > 1. - _John Cerkan_, Oct 07 2016 %o A023316 (Magma) [n: n in [1..1000000] | IsPrime(n) and IsPrime(5*n+8) and IsPrime(25*n+48) and IsPrime(125*n+248) and IsPrime(625*n+1248)] // _Vincenzo Librandi_, Aug 04 2010 %o A023316 (PARI) is(n)=isprime(n) && isprime(5*n+8) && isprime(25*n+48) && isprime(125*n+248) && isprime(625*n+1248) \\ _Charles R Greathouse IV_, Oct 08 2016 %Y A023316 Subsequence of A023220, A023255, A023286, and A111225. %K A023316 nonn %O A023316 1,1 %A A023316 _David W. Wilson_