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A091162
Number of primes of the form 12k + 5 less than 10^n.
4
1, 6, 44, 309, 2409, 19611, 166169, 1440483, 12712625, 113763849
OFFSET
1,2
MATHEMATICA
Table[Total[Table[If[IntegerQ[(n-5)/12], 1, 0], {n, Prime[Range[ PrimePi[ 10^k]]]}]], {k, 10}] (* Harvey P. Dale, Oct 27 2019 *)
CROSSREFS
Cf. A091161 + A091162 + A091163 + A091164 +2 (for 2 & 3) = A006880.
Sequence in context: A182540 A309418 A203601 * A156002 A091163 A189800
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Jan 12 2004
STATUS
approved