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A079690 Number of 5's in n!. 13
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 1, 0, 1, 0, 2, 0, 3, 3, 2, 2, 2, 4, 3, 1, 2, 2, 2, 2, 5, 1, 2, 5, 6, 5, 7, 5, 5, 8, 5, 6, 5, 2, 4, 7, 3, 3, 11, 5, 6, 5, 5, 3, 7, 6, 4, 7, 10, 3, 7, 8, 5, 10, 7, 3, 7, 13, 9, 10, 6, 9, 7, 14, 13, 1, 12, 8, 13, 13, 11, 10, 10, 12, 17, 17, 14, 15, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,18

LINKS

Table of n, a(n) for n=0..95.

Index entries for sequences related to factorial numbers.

FORMULA

a(n) = A034886(n) - (A027869(n) + A079680(n) + A079714(n) + A079684(n) + A079688(n) + A079691(n) + A079692(n) + A079693(n) + A079694(n)). - Reinhard Zumkeller, Jan 27 2008

MATHEMATICA

DigitCount[#, 10, 5]&/@(Range[0, 100]!) (* Harvey P. Dale, Sep 17 2016 *)

CROSSREFS

Cf. A027869, A079714.

Cf. A000142, A137579, A137580.

Sequence in context: A130538 A276007 A078659 * A257510 A305445 A225721

Adjacent sequences:  A079687 A079688 A079689 * A079691 A079692 A079693

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard, Jan 31 2003

STATUS

approved

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Last modified October 19 16:17 EDT 2019. Contains 328223 sequences. (Running on oeis4.)