OFFSET
1,1
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[Prime[Range[200]], PrimeQ[20#+3]&&PrimeQ[20#-3]&]
PROG
(Magma) [p: p in PrimesUpTo(2500) | IsPrime(20*p-3) and IsPrime(20*p+3)]; // Vincenzo Librandi, Nov 13 2010
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, May 05 2005
STATUS
approved