OFFSET
1,1
LINKS
Pierre CAMI, Table of n, a(n) for n = 1..10000
EXAMPLE
24*2^3-1=191 prime so a(1)=2.
24*3^3-1=647 prime so a(2)=3.
MATHEMATICA
Select[Prime[Range[300]], PrimeQ[24 #^3 - 1] &] (* Vincenzo Librandi, Sep 07 2014 *)
PROG
(PFGW & SCRIPT)
SCRIPT
DIM n, 0
DIMS t
OPENFILEOUT myf, a(n).txt
LABEL loop1
SET n, n+1
SETS t, %d, %d\,; n; p(n)
PRP 24*p(n)^3-1, t
IF ISPRP THEN GOTO a
GOTO loop1
LABEL a
WRITE myf, t
GOTO loop1
(PARI) select(p->isprime(24*p^3-1), primes(300)) \\ Colin Barker, Jul 28 2014
(Magma) [p: p in PrimesUpTo(1700)| IsPrime(24*p^3-1)]; // Vincenzo Librandi, Sep 07 2014
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Pierre CAMI, Jul 28 2014
STATUS
approved