A079694 - OEIS

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A079694

Number of 9's in n!.

14

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 0, 2, 1, 0, 0, 1, 3, 0, 1, 2, 2, 1, 1, 0, 4, 2, 1, 2, 2, 5, 3, 7, 4, 1, 5, 5, 0, 4, 2, 2, 4, 6, 7, 3, 2, 2, 3, 3, 6, 4, 6, 6, 5, 6, 8, 6, 7, 6, 7, 5, 6, 6, 8, 8, 7, 12, 5, 7, 5, 7, 10, 12, 7, 6, 9, 5, 12, 13, 12, 10, 9, 9, 10, 13, 18, 14, 12, 7, 7, 7, 15, 20, 16

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,12

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..10000

Index entries for sequences related to factorial numbers.

FORMULA

a(n) = A034886(n) - (A027869(n) + A079680(n) + A079714(n) + A079684(n) + A079688(n) + A079690(n) + A079691(n) + A079692(n) + A079693(n)). - Reinhard Zumkeller, Jan 27 2008

MATHEMATICA

DigitCount[#, 10, 9]&/@(Range[0, 100]!) (* Harvey P. Dale, Dec 12 2013 *)

CROSSREFS

Cf. A027869, A079714.

Cf. A000142, A137579, A137580.

Sequence in context: A116422 A130161 A115672 * A339895 A068906 A162514

Adjacent sequences: A079691 A079692 A079693 * A079695 A079696 A079697

KEYWORD

nonn,base,easy

AUTHOR

Cino Hilliard, Jan 31 2003

STATUS

approved