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A168669 Numbers n such that sqrt(36*n+49) is prime. 2

%I

%S 0,2,22,50,60,102,172,190,260,282,520,632,830,1012,1380,1430,1612,

%T 1920,2130,2192,2720,2790,3042,3382,3460,3740,4202,4922,5352,5450,

%U 5800,5902,6372,8310,8992,9570,10032,10642,11412,12062,12580,12730,13262,13962

%N Numbers n such that sqrt(36*n+49) is prime.

%H Vincenzo Librandi, <a href="/A168669/b168669.txt">Table of n, a(n) for n = 1..1000</a>

%e For n=0, p=7; n=2, p=11; n=22, p=29

%t Select[Range[0, 15000], PrimeQ[Sqrt[36 # + 49]]&] (* _Vincenzo Librandi_, Apr 05 2013 *)

%K nonn,easy

%O 1,2

%A _Vincenzo Librandi_, Dec 02 2009

%E Definition clarified by _N. J. A. Sloane_, Jun 18 2010.

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Last modified January 18 06:32 EST 2022. Contains 350452 sequences. (Running on oeis4.)