login
A139405
Numbers k such that 8*k+1 and 8*k+7 are primes.
3
2, 5, 9, 12, 24, 29, 32, 44, 54, 57, 74, 75, 80, 107, 110, 122, 129, 137, 152, 162, 165, 170, 179, 185, 194, 200, 207, 219, 222, 234, 249, 260, 267, 285, 297, 299, 302, 305, 332, 339, 362, 414, 432, 452, 470, 500, 509, 519, 555, 557, 564, 570, 582, 584, 599
OFFSET
1,1
LINKS
MATHEMATICA
a = {}; Do[If[PrimeQ[8 n + 1] && PrimeQ[8 n + 7], AppendTo[a, n]], {n, 1, 1000}]; a
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Apr 19 2008
STATUS
approved