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 A023354 #23 Sep 08 2022 08:44:47 %S A023354 4099,8117,9587,36899,73061,75527,214771,240197,350219,385709,453199, %T A023354 483649,501029,556607,575119,616991,701497,724597,880067,961069, %U A023354 1230311,1342501,1376197,1558811,1566847,1613707,2450779,2483711,2536379,2598157 %N A023354 Primes that remain prime through 5 iterations of function f(x) = 9x + 8. %C A023354 Primes p such that 9*p+8, 81*p+80, 729*p+728, 6561*p+6560 and 59049*p+59048 are also primes. - _Vincenzo Librandi_, Aug 05 2010 %H A023354 John Cerkan, <a href="/A023354/b023354.txt">Table of n, a(n) for n = 1..10000</a> %o A023354 (Magma) [n: n in [1..19000000] | IsPrime(n) and IsPrime(9*n+8) and IsPrime(81*n+80) and IsPrime(729*n+728) and IsPrime(6561*n+6560) and IsPrime(59049*n+59048)] // _Vincenzo Librandi_, Aug 05 2010 %Y A023354 Subsequence of A023235, A023267, A023298, and A023326. %K A023354 nonn %O A023354 1,1 %A A023354 _David W. Wilson_