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A027758 Primes of the form k^2 + k + 9. 4

%I

%S 11,29,191,281,389,659,821,1901,2459,3089,5861,6329,7841,11351,14051,

%T 14771,19469,21179,22961,23879,30809,36299,42239,43481,44741,55469,

%U 56891,64271,67349,72101,73721,90911,96419,137279,139511

%N Primes of the form k^2 + k + 9.

%H P. De Geest, <a href="http://www.worldofnumbers.com/index.html">World!Of Numbers</a>

%o (MAGMA) [ a: k in [0..450] | IsPrime(a) where a is k^2+k+9 ]; // _Vincenzo Librandi_, Dec 29 2010

%K nonn

%O 1,1

%A _Patrick De Geest_

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Last modified April 13 00:24 EDT 2021. Contains 342934 sequences. (Running on oeis4.)