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.

A028885 Numbers k such that k^2 - 8 is prime.

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%I A028885 #30 Aug 11 2024 14:41:29
%S A028885 5,7,9,11,17,19,21,23,25,31,35,37,45,49,51,53,65,67,81,87,91,93,101,
%T A028885 103,115,117,119,121,123,129,133,135,143,145,147,149,161,163,173,177,
%U A028885 185,187,191,203,205,207,213,227,229,231,235,241,245,247,257,259,261,269
%N A028885 Numbers k such that k^2 - 8 is prime.
%H A028885 Vincenzo Librandi, <a href="/A028885/b028885.txt">Table of n, a(n) for n = 1..1000</a>
%H A028885 P. De Geest, <a href="https://www.worldofnumbers.com/consemor.htm">Palindromic Quasipronics of the form n(n+x)</a>
%t A028885 Select[Range[3,1200],PrimeQ[#^2-8]&] (* _Vladimir Joseph Stephan Orlovsky_, Feb 27 2011 *)
%o A028885 (Magma) [n: n in [3..1000] | IsPrime(n^2-8)]; // _Vincenzo Librandi_, Nov 18 2010
%o A028885 (PARI) is(n)=isprime(n^2-8) \\ _Charles R Greathouse IV_, Jun 06 2017
%Y A028885 Cf. A028886 (associated primes).
%K A028885 nonn,easy
%O A028885 1,1
%A A028885 _Patrick De Geest_
%E A028885 Checked by Neven Juric (neven.juric(AT)apis-it.hr), Feb 04 2008