OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[40000], PrimeQ[10^2# - 1] && PrimeQ[10^2# - 3] && PrimeQ[10^2# - 7] && PrimeQ[10^2# - 9] &]
Select[Range[31000], AllTrue[100#-{1, 3, 7, 9}, PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Feb 01 2015 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Oct 30 2001
STATUS
approved