OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Prime Triplet
MATHEMATICA
Select[Tally[Flatten[Select[Partition[Prime[Range[800]], 3, 1], #[[3]]- #[[1]] == 6&]]], #[[2]]==2&][[All, 1]] (* Harvey P. Dale, Jun 01 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Sep 07 2004
STATUS
approved