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Primes of the form 10n^2+6n+1.
1

%I #13 Sep 08 2022 08:45:40

%S 17,53,109,281,397,1061,1277,2341,2657,4973,6917,8009,9181,10433,

%T 13177,13913,14669,18749,20521,25301,26317,28409,32833,42641,45293,

%U 46649,56701,58217,59753,67733,69389,76213,77969,83357,85193,87049,90821

%N Primes of the form 10n^2+6n+1.

%C Subsequence of A207337. Primes of the form n^2+(3n+1)^2. - _Bruno Berselli_, Jul 17 2012

%H Vincenzo Librandi, <a href="/A154409/b154409.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Table[10n^2+6n+1,{n,0,700}],PrimeQ] (* _Vincenzo Librandi_, Jul 17 2012 *)

%o (Magma) [a: n in [0..200] | IsPrime(a) where a is 10*n^2+6*n+1]; // _Vincenzo Librandi_, Jul 17 2012

%Y Cf. A017305, A154408.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Jan 09 2009

%E Misleading formula removed - _R. J. Mathar_, Oct 18 2010