cp's OEIS Frontend

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.

A023294 Primes that remain prime through 3 iterations of function f(x) = 8x + 7.

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%I A023294 #22 Aug 28 2024 15:05:15
%S A023294 659,2549,5189,6269,7229,7949,9209,11579,16139,18089,22739,25589,
%T A023294 26099,26339,29009,30689,40289,51719,55799,59669,60689,61379,63599,
%U A023294 69959,70229,74609,85829,94949,95819,102539,109589,118169,121469,135599,136889
%N A023294 Primes that remain prime through 3 iterations of function f(x) = 8x + 7.
%C A023294 Primes p such that 8*p+7, 64*p+63 and 512*p+511 are also primes. - _Vincenzo Librandi_, Aug 04 2010
%H A023294 John Cerkan, <a href="/A023294/b023294.txt">Table of n, a(n) for n = 1..10000</a>
%F A023294 a(n) == 29 (mod 30). - _John Cerkan_, Sep 23 2016
%o A023294 (Magma) [n: n in [1..450000] | IsPrime(n) and IsPrime(8*n+7) and IsPrime(64*n+63) and IsPrime(512*n+511)]; // _Vincenzo Librandi_, Aug 04 2010
%Y A023294 Subsequence of A023231, A023263, and A139487.
%K A023294 nonn
%O A023294 1,1
%A A023294 _David W. Wilson_