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 A243889 #11 Sep 08 2022 08:46:08
%S A243889 661,1201,2281,2713,3181,4801,5413,8221,9013,12541,13513,17761,18913,
%T A243889 20101,32413,33961,38821,51421,72481,91921,94513,108013,110821,134581,
%U A243889 137713,153913,167521,211801,223681,265621,274441,335281,345181,365413,370561,440761,560641
%N A243889 Primes of the form 2*n^2+30*n+13.
%C A243889 Subsequence of A142104.
%C A243889 Conjecture: except 2281, 2^a(n)-1 is not prime; in other words, these primes are included in A054723.
%C A243889 2*a(n) + 199 is a square. - _Vincenzo Librandi_, Apr 10 2015
%H A243889 Vincenzo Librandi, <a href="/A243889/b243889.txt">Table of n, a(n) for n = 1..1000</a>
%t A243889 Select[Table[2 n^2 + 30 n + 13, {n, 1000}], PrimeQ]
%o A243889 (Magma) [a: n in [1..800] | IsPrime(a) where a is 2*n^2+30*n+13];
%Y A243889 Cf. A142104.
%Y A243889 Cf. similar sequences listed in A243888.
%K A243889 nonn,easy
%O A243889 1,1
%A A243889 _Vincenzo Librandi_, Jun 16 2014