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A027869 Number of 0's in n!. 18
0, 0, 0, 0, 0, 1, 1, 2, 2, 1, 2, 2, 4, 4, 2, 4, 4, 4, 5, 6, 7, 7, 8, 5, 6, 9, 8, 9, 10, 7, 9, 7, 10, 8, 11, 9, 10, 12, 16, 12, 9, 15, 13, 13, 12, 13, 16, 11, 14, 14, 19, 18, 18, 17, 18, 18, 17, 20, 17, 19, 19, 26, 20, 21, 20, 20, 23, 22, 25, 21, 20, 25, 23, 35 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

T. D. Noe, Table of n, a(n) for n = 0..1000

Index entries for sequences related to factorial numbers.

FORMULA

a(n) = A034886(n) - (A079680(n) + A079714(n) + A079684(n) + A079688(n) + A079690(n) + A079691(n) + A079692(n) + A079693(n) + A079694(n)). - Reinhard Zumkeller, Jan 27 2008

A027868(n) <= a(n). - Reinhard Zumkeller, Jan 27 2008

MATHEMATICA

Table[Count[IntegerDigits[n!], 0], {n, 0, 100}] (* T. D. Noe, Apr 10 2012 *)

CROSSREFS

Cf. A000142, A137579, A137580.

Sequence in context: A071457 A227782 A115034 * A156748 A075445 A216612

Adjacent sequences:  A027866 A027867 A027868 * A027870 A027871 A027872

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 16 07:24 EDT 2014. Contains 246799 sequences.