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Primes p such that 5*p - 6 is square.
3

%I #15 Aug 29 2017 03:38:08

%S 2,3,11,59,107,443,563,1187,3539,4091,4931,5987,7451,8243,9419,10859,

%T 12203,23531,24083,24923,27827,29339,36467,39251,41771,48611,55547,

%U 66587,67979,99971,117659,133499,135467,143483,146891,159491,164531

%N Primes p such that 5*p - 6 is square.

%H G. C. Greubel, <a href="/A110482/b110482.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) = (A110481(n) + 6)/5.

%t Select[Prime[Range[20000]], IntegerQ[Sqrt[5# - 6]] &] (* _Harvey P. Dale_, Feb 03 2011 *)

%Y Cf. A110480, A110481.

%K easy,nonn

%O 1,1

%A _Giovanni Teofilatto_, Sep 09 2005

%E Corrected and extended by _Ray Chandler_, Sep 12 2005