OFFSET
1,1
COMMENTS
Primes p such that p-1000 is also prime.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
a(1) = 13+1000= 1013. a(2) = 19+1000=1019. a(3) = 31+1000=1031.
MATHEMATICA
Select[Prime[Range[1000]]+1000, PrimeQ] (* Harvey P. Dale, Dec 15 2010 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Sep 14 2009
EXTENSIONS
Definition rephrased by R. J. Mathar, Sep 16 2009
STATUS
approved