OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..4200
Eric Weisstein's World of Mathematics, Cousin Primes
MATHEMATICA
Select[Range[2000], PrimeQ[2*#-1]&&PrimeQ[2*#+3]&] (* Vladimir Joseph Stephan Orlovsky, Dec 26 2010 *)
PROG
(Magma) [n: n in [1..1000] |IsPrime(2*n-1) and IsPrime(2*n+3)]; // Vincenzo Librandi, May 19 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Ray Chandler, Oct 26 2003
STATUS
approved