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 A147515 #9 Jul 18 2019 18:35:29 %S A147515 0,1,4,8,11,13,14,17,22,31,34,38,41,46,52,55,59,64,67,83,92,101,106, %T A147515 133,143,148,157,164,175,178,188,203,214,218,230,235,253,260,266,281, %U A147515 290,319,325,326,340,346,361,367,370,389,406,410,412,431,448,454,461,466 %N A147515 Numbers n with property that (2n)^4+3 is prime. %H A147515 Zak Seidov, <a href="/A147515/b147515.txt">Table of n, a(n) for n=1..1000</a> %F A147515 a(n) = A125259(n)/2. %t A147515 Select[Range[0,500],PrimeQ[(2#)^4+3]&] (* _Harvey P. Dale_, Jul 18 2019 *) %o A147515 (PARI) isok(n) = isprime((2*n)^4+3); \\ _Michel Marcus_, Oct 15 2013 %Y A147515 Cf. A125259. %K A147515 nonn %O A147515 1,3 %A A147515 _Zak Seidov_, Nov 05 2008