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A079714 Number of 2's in n!. 13
0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 3, 2, 0, 3, 1, 2, 2, 3, 1, 2, 2, 2, 1, 2, 1, 0, 0, 4, 7, 3, 1, 4, 3, 5, 4, 3, 4, 4, 4, 8, 6, 6, 10, 3, 10, 3, 6, 9, 6, 1, 9, 10, 6, 9, 10, 13, 8, 6, 11, 8, 8, 8, 14, 7, 8, 1, 9, 12, 10, 16, 8, 12, 9, 5, 9, 12, 14, 17, 16, 12, 9, 10, 8, 8, 17, 11, 19, 7, 13, 16, 19 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,14

LINKS

Table of n, a(n) for n=0..93.

Cino Hilliard, Program

Index entries for sequences related to factorial numbers.

FORMULA

a(n) = A034886(n) - (A027869(n) + A079680(n) + A079684(n) + A079688(n) + A079690(n) + A079691(n) + A079692(n) + A079693(n) + A079694(n)). - Reinhard Zumkeller, Jan 27 2008

CROSSREFS

Cf. A000142, A137579, A137580.

Sequence in context: A273528 A085080 A260308 * A286889 A286368 A190710

Adjacent sequences:  A079711 A079712 A079713 * A079715 A079716 A079717

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard, Jan 31 2003

STATUS

approved

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Last modified September 22 17:04 EDT 2019. Contains 327311 sequences. (Running on oeis4.)