OFFSET
1,1
COMMENTS
Primes p such that 8*p+1, 64*p+9 and 512*p+73 are also primes. - Vincenzo Librandi, Aug 04 2010
LINKS
John Cerkan, Table of n, a(n) for n = 1..10000
FORMULA
a(n) == 17 (mod 30) for n > 1. - John Cerkan, Sep 23 2016
MATHEMATICA
okQ[n_]:=And@@PrimeQ[NestList[8#+1&, n, 3]]; Select[Prime[Range[50000]], okQ] (* Harvey P. Dale, Jan 09 2011 *)
PROG
(Magma) [n: n in [1..450000] | IsPrime(n) and IsPrime(8*n+1) and IsPrime(64*n+9) and IsPrime(512*n+73)]; // Vincenzo Librandi, Aug 04 2010
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved