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A079113
Number of 3's in n# (n primorial) = 3's in A002110(n).
1
0, 0, 1, 0, 1, 2, 0, 0, 1, 2, 1, 2, 2, 4, 0, 2, 2, 3, 1, 2, 2, 3, 1, 5, 5, 8, 4, 3, 3, 3, 7, 2, 6, 9, 8, 9, 4, 9, 6, 5, 4, 6, 7, 6, 11, 8, 7, 16, 11, 6, 8, 12, 8, 12, 8, 12, 4, 16, 11, 4, 15, 14, 15, 11, 15, 14, 8, 13, 20, 10, 8, 18, 14, 15, 14, 16, 14, 16, 12, 22, 17, 17, 15, 17, 17, 20, 14, 16
OFFSET
2,6
LINKS
MATHEMATICA
DigitCount[#, 10, 3]&/@Rest[FoldList[Times, 1, Prime[Range[100]]]] (* Vincenzo Librandi, Apr 07 2014 *)
PROG
(PARI) See program in Number of 0's in n#
CROSSREFS
Cf. A002110.
Sequence in context: A204425 A245187 A292598 * A144874 A333365 A303065
KEYWORD
easy,nonn
AUTHOR
Cino Hilliard, Feb 03 2003
STATUS
approved