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 A154409 #13 Sep 08 2022 08:45:40
%S A154409 17,53,109,281,397,1061,1277,2341,2657,4973,6917,8009,9181,10433,
%T A154409 13177,13913,14669,18749,20521,25301,26317,28409,32833,42641,45293,
%U A154409 46649,56701,58217,59753,67733,69389,76213,77969,83357,85193,87049,90821
%N A154409 Primes of the form 10n^2+6n+1.
%C A154409 Subsequence of A207337. Primes of the form n^2+(3n+1)^2. - _Bruno Berselli_, Jul 17 2012
%H A154409 Vincenzo Librandi, <a href="/A154409/b154409.txt">Table of n, a(n) for n = 1..1000</a>
%t A154409 Select[Table[10n^2+6n+1,{n,0,700}],PrimeQ] (* _Vincenzo Librandi_, Jul 17 2012 *)
%o A154409 (Magma) [a: n in [0..200] | IsPrime(a) where a is 10*n^2+6*n+1]; // _Vincenzo Librandi_, Jul 17 2012
%Y A154409 Cf. A017305, A154408.
%K A154409 nonn,easy
%O A154409 1,1
%A A154409 _Vincenzo Librandi_, Jan 09 2009
%E A154409 Misleading formula removed - _R. J. Mathar_, Oct 18 2010