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 A110558 #19 Aug 31 2017 18:52:19 %S A110558 8,12,16,24,28,32,40,44,52,60,68,72,84,88,96,100,112,136,144,152,156, %T A110558 164,168,172,180,184,196,200,208,224,236,248,252,256,276,292,304,320, %U A110558 324,340,348,364,368,380,392,408,432,436,448,452,460,472,500,504,508 %N A110558 Numbers n such that (n^2-8)/8 is prime. %C A110558 These numbers need to be of the form 4*j then (16*j^2-8)/8 = 2*j^2-1. %C A110558 A066436 gives resulting primes p such that 8p+8 is square. - _Ray Chandler_, Sep 15 2005 %H A110558 G. C. Greubel, <a href="/A110558/b110558.txt">Table of n, a(n) for n = 1..5000</a> %F A110558 a(n) = 2*A090697(n) = 4*A066049(n). - _Ray Chandler_, Sep 15 2005 %t A110558 Select[Range[510],PrimeQ[(#^2-8)/8]&] (* _Harvey P. Dale_, Feb 03 2011 *) %o A110558 (PARI) is(n)=isprime((n^2-8)/8) \\ _Charles R Greathouse IV_, Feb 20 2017 %Y A110558 Cf. A066049, A066436, A090697, A091176. %K A110558 nonn %O A110558 1,1 %A A110558 _Pierre CAMI_, Sep 12 2005 %E A110558 Extended by _Ray Chandler_, Sep 15 2005