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Numbers n such that (2^n+1)^3-2 is prime.
2

%I #16 Jun 19 2016 03:34:12

%S 3,7,11,15,35,16475,26827,79127,85075

%N Numbers n such that (2^n+1)^3-2 is prime.

%C Next term > 88000.

%C 471043 is in the sequence, but its position is not determined yet. - _Serge Batalov_, Jun 18 2016

%H S. Harvey, <a href="http://harvey563.tripod.com/Carol_Kynea.txt">Carol and Kynea Primes</a>.

%o (PARI) is(n)=(n%4==3 && ispseudoprime((2^n+1)^3-2)) \\ _Charles R Greathouse IV_, Feb 19 2016

%Y Cf. A099359.

%K nonn,more

%O 1,1

%A _Ray Chandler_, Nov 21 2004