OFFSET
1,6
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..1000
MATHEMATICA
(Last[#]-First[#])/6&/@Select[Partition[Prime[Range[800]], 2, 1], Mod[First[#], 3] == Mod[Last[#], 3]==1&] (* Harvey P. Dale, Feb 26 2013 *)
PROG
(Haskell)
a219244 n = a219244_list !! (n-1)
a219244_list = map (`div` 6) $ zipWith (-) a217659_list a185934_list
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 16 2012
STATUS
approved