OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
23 is a term, as 23 = 4*5 + 3.
MATHEMATICA
Select[Prime[Range[6! ]], PrimeQ[Floor[ #/4]]&] (* Vladimir Joseph Stephan Orlovsky, Nov 25 2009 *)
PROG
(Magma) [p: p in PrimesUpTo(2000)| IsPrime(Floor(p/4))]; // Vincenzo Librandi, Aug 04 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Sep 19 2002
EXTENSIONS
Definition corrected by Eric M. Schmidt, Aug 04 2013
STATUS
approved