OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
FORMULA
a(n) >> n log^2 n. - Charles R Greathouse IV, Feb 23 2017
MATHEMATICA
Select[Prime[Range[6! ]], PrimeQ[Floor[ #/6]]&]
PROG
(Magma) [p: p in PrimesUpTo(1400) | IsPrime(Floor(p/6))]; // Vincenzo Librandi, Apr 16 2013
(PARI) is(n)=isprime(n) && isprime(n\6) \\ Charles R Greathouse IV, Feb 23 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vladimir Joseph Stephan Orlovsky, Nov 25 2009
EXTENSIONS
Definition corrected by R. J. Mathar, Dec 06 2009
STATUS
approved