login
Numbers n such that n+(n+1)^3 is prime.
0

%I #6 Jun 13 2017 12:49:31

%S 2,3,6,9,14,15,17,20,24,26,32,35,38,42,45,50,51,54,62,72,77,80,86,92,

%T 93,95,99,102,104,108,111,114,116,119,123,126,128,134,138,144,149,150,

%U 164,165,170,177,188,191,197,198,201,203,215,222,227,240,242,245,257,258

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

%e 2+3^3=29, 3+4^3=67, 6+7^3=349, 9+10^3=1009 all primes.

%t Select[Range[300],PrimeQ[#+(#+1)^3]&] (* _Harvey P. Dale_, Mar 14 2013 *)

%o (PARI) is(n)=isprime(n+(n+1)^3) \\ _Charles R Greathouse IV_, Jun 13 2017

%K nonn,easy

%O 1,1

%A _Zak Seidov_, Apr 28 2007