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 A023333 #18 Sep 08 2022 08:44:47 %S A023333 14723,20123,54713,109433,594653,604883,676493,759953,847103,935843, %T A023333 1035743,1049603,1079033,1099823,1222253,1263323,1499153,1754033, %U A023333 1835003,1893173,2017283,2071493,2099213,2199653,2895743,2998313,3389693,4133663 %N A023333 Primes that remain prime through 5 iterations of function f(x) = 2x + 7. %C A023333 Primes p such that 2*p+7, 4*p+21, 8*p+49, 16*p+105 and 32*p+217 are also primes. - _Vincenzo Librandi_, Aug 04 2010 %H A023333 John Cerkan, <a href="/A023333/b023333.txt">Table of n, a(n) for n = 1..10000</a> %F A023333 a(n) == 23 (mod 30). - _John Cerkan_, Oct 10 2016 %o A023333 (Magma) [n: n in [1..5000000] | IsPrime(n) and IsPrime(2*n+7) and IsPrime(4*n+21) and IsPrime(8*n+49) and IsPrime(16*n+105) and IsPrime(32*n+217)] // _Vincenzo Librandi_, Aug 04 2010 %Y A023333 Subsequence of A023206, A023244, A023275, A023305, and A105760. %K A023333 nonn %O A023333 1,1 %A A023333 _David W. Wilson_