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A154616 Primes of the form (4*n^2-8*n-9)/3. 7

%I #16 Jul 12 2014 11:44:02

%S 17,29,61,157,257,337,641,701,829,1117,1277,1361,2129,2237,3329,4177,

%T 4481,4637,4957,5981,6529,7297,7901,8317,9181,9629,9857,10321,11777,

%U 12541,13597,17021,19841,21841,22877,23581,26881,29201,32029,34129,37181,39901,40829

%N Primes of the form (4*n^2-8*n-9)/3.

%C Also primes of the form (k^2-13)/3. - _Chai Wah Wu_, Jul 10 2014

%H Vincenzo Librandi, <a href="/A154616/b154616.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Table[(4*n^2-8*n-9)/3,{n,3,200}],PrimeQ] (* _Vincenzo Librandi_, Jul 23 2012 *)

%Y Cf. A154618.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Jan 18 2009

%E Corrected by _Bruno Berselli_, Jun 24 2010

%E Checked by _N. J. A. Sloane_, Jun 25 2010

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)