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 A138338 #11 Sep 08 2022 08:45:33
%S A138338 17,89,233,449,1097,2609,3257,6569,7577,12329,13697,15137,16649,18233,
%T A138338 19889,21617,23417,31337,35729,45377,47969,65033,77849,81233,99233,
%U A138338 103049,106937,119033,123209,131777,159209,173897,216233,221849,227537
%N A138338 Primes of the form n^2+8.
%t A138338 Intersection[Table[n^2+8,{n,0,10^2}],Prime[Range[9*10^3]]] ...or... For[i=8,i<=8,a={};Do[If[PrimeQ[n^2+i],AppendTo[a,n^2+i]],{n,0,100}];Print["n^2+",i,",",a];i++ ]
%o A138338 (Magma) [ a: n in [0..900] | IsPrime(a) where a is n^2+8] // _Vincenzo Librandi_, Nov 24 2010
%K A138338 nonn
%O A138338 1,1
%A A138338 _Vladimir Joseph Stephan Orlovsky_, May 07 2008
%E A138338 More terms from _Vincenzo Librandi_, Apr 28 2010