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 A250194 #12 May 19 2018 02:02:43
%S A250194 5,7,10,16,17,39,41,51,55,70,96,97,104,132,136,137,148,182,195,206,
%T A250194 216,227,234,236,245,262,267,278,283,287,305,310,331,361,362,380,384,
%U A250194 409,410,411,423,438,446,464,473,495,522,549,561,564,578,587,591,592,602,619,622,633,665,679,687,714,741,759,777
%N A250194 Numbers n such that Phi(48,n) is prime, where Phi is the cyclotomic polynomial.
%H A250194 G. C. Greubel, <a href="/A250194/b250194.txt">Table of n, a(n) for n = 1..10000</a>
%t A250194 Select[Range[800], PrimeQ[Cyclotomic[48, #]] &] (* _Vincenzo Librandi_, Jan 17 2015 *)
%o A250194 (PARI) {is(n)=isprime(polcyclo(48,n))};
%o A250194 for(n=1,1000, if(is(n)==1, print1(n, ", "))) \\ _G. C. Greubel_, May 18 2018
%Y A250194 Cf. A246392.
%K A250194 nonn
%O A250194 1,1
%A A250194 _R. J. Mathar_, Jan 12 2015