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 A048097 #22 Sep 08 2022 08:44:57 %S A048097 0,1,2,3,4,5,6,7,8,9,12,13,15,16,17,18,20,23,25,28,29,30,34,38,39,41, %T A048097 45,47,51,52,56,58,60,61,62,67,68,73,75,78,80,81,83,84,85,93,94,96, %U A048097 100,101,103,106,108,113,114,122,123,124,125,127,130,135 %N A048097 Numbers k such that k^2 + k + 11 is prime. %H A048097 Vincenzo Librandi, <a href="/A048097/b048097.txt">Table of n, a(n) for n = 1..1000</a> %t A048097 Select[Range[0,150],PrimeQ[#^2+#+11]&] (* _Harvey P. Dale_, May 18 2011 *) %o A048097 (Magma) [n: n in [0..150] |IsPrime(n^2+n+11)]; // _Vincenzo Librandi_, Aug 06 2010 %o A048097 (PARI) is(n)=isprime(n^2+n+11) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A048097 Cf. A048058, A048059. %K A048097 nonn,easy %O A048097 1,3 %A A048097 _N. J. A. Sloane_