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 A102130 #16 Sep 08 2022 08:45:16
%S A102130 13,41,313,421,1013,1201,1861,2113,2381,3613,5101,7321,9941,10513,
%T A102130 13613,14281,16381,20201,21013,21841,24421,30013,34061,41761,47741,
%U A102130 51521,52813,54121,59513,60901,82013,83641,90313,97241,99013,100801,106261
%N A102130 Primes of the form 8*n^2 + 4*n + 1.
%t A102130 Select[Table[8n^2+4n+1,{n,0,200}],PrimeQ] (* _Harvey P. Dale_, Jul 24 2012 *)
%o A102130 (Magma) [ a: n in [0..400] | IsPrime(a) where a is 8*n^2 +4*n + 1]; // _Vincenzo Librandi_, Nov 17 2010
%Y A102130 Primes in A102083.
%K A102130 easy,nonn
%O A102130 1,1
%A A102130 _Jonathan Vos Post_, Feb 14 2005