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 A111226 #15 Oct 28 2024 18:47:50 %S A111226 1,5,7,11,17,19,23,25,29,31,37,43,49,53,59,61,65,67,71,77,89,91,95, %T A111226 107,109,113,115,119,121,127,133,143,149,155,157,163,169,173,175,179, %U A111226 185,187,191,193,197,215,217,221,235,241,245,253,257,259,263,271,283,287 %N A111226 Numbers n such that 5*n + 12 is prime. %e A111226 If n=109 then 5*n + 12 = 557 (prime). %t A111226 Select[Range[300], PrimeQ[5 # + 12] &] %o A111226 (Magma) [n: n in [0..100000] |IsPrime(5*n+12)]; // _Vincenzo Librandi_, Nov 13 2010 %o A111226 (PARI) is(n)=isprime(5*n+12) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A111226 Cf. A024894, A087505, A024897, A081759. %K A111226 nonn,easy %O A111226 1,2 %A A111226 _Parthasarathy Nambi_, Oct 26 2005