OFFSET
1,3
COMMENTS
Except for the first, all terms == 1 or 3 (mod 6). - Robert Israel, Apr 02 2020
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
MAPLE
select(n -> isprime(2*n+5) and isprime(5*n+2), [0, seq(i, i=1..1000, 2)]); # Robert Israel, Apr 02 2020
MATHEMATICA
Reap[Do[If[PrimeQ[2*n+5]&&PrimeQ[5*n+2], Sow[n]], {n, 0, 600}]][[2, 1]]
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Mar 31 2006
STATUS
approved