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.

A154620 Primes p such that 31p+14 is prime.

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%I A154620 #8 Sep 08 2022 08:45:40
%S A154620 3,17,23,47,53,107,113,137,179,197,233,263,269,347,353,383,389,419,
%T A154620 449,503,563,587,593,599,617,647,659,677,683,719,773,929,1049,1163,
%U A154620 1193,1229,1259,1307,1319,1367,1373,1439,1553,1607,1667,1787,1823,1847,1889
%N A154620 Primes p such that 31p+14 is prime.
%H A154620 Vincenzo Librandi, <a href="/A154620/b154620.txt">Table of n, a(n) for n = 1..1000</a>
%e A154620 For p=3, 31p+14=107; p=449, 31p+14=13933
%t A154620 Select[Prime[Range[9000]],PrimeQ[31#+14]&] (* _Vincenzo Librandi_, Jul 31 2012 *)
%o A154620 (Magma) [p: p in PrimesUpTo(2000)|IsPrime(31*p+14)]; // _Vincenzo Librandi_, Jul 31 2012
%Y A154620 Cf. A142018.
%K A154620 nonn,easy
%O A154620 1,1
%A A154620 _Vincenzo Librandi_, Jan 17 2009