OFFSET
1,1
COMMENTS
Equivalently, third of five consecutive primes with this consecutive difference pattern: 30, 6, 6, 30. Subsequence of A141279.
LINKS
Rick L. Shepherd, Table of n, a(n) for n = 1..5200
EXAMPLE
a(1) = 846493 because 846457, 846487, 846493, 846499 and 846529 are consecutive primes and no smaller primes have this pattern of differences.
MATHEMATICA
Transpose[Select[Partition[Prime[Range[830000]], 5, 1], Differences[#] == {30, 6, 6, 30}&]] [[3]] (* Harvey P. Dale, Sep 09 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Rick L. Shepherd, Jun 24 2008
STATUS
approved