OFFSET
1,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = A040040(n)-2.
MATHEMATICA
Select[Range[0, 1000], PrimeQ[2 # + 3] && PrimeQ[2 # + 5] &]
PROG
(Magma) [n: n in [0..1000] | IsPrime(2*n+3) and IsPrime(2*n+5)];
CROSSREFS
KEYWORD
nonn,easy,less
AUTHOR
Vincenzo Librandi, Jun 11 2014
STATUS
approved