login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A079688 Number of 4's in n!. 13
0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 2, 2, 3, 1, 2, 4, 2, 3, 2, 4, 3, 1, 1, 0, 3, 4, 3, 3, 3, 3, 3, 4, 3, 6, 2, 5, 4, 3, 3, 4, 3, 7, 3, 5, 7, 6, 6, 13, 8, 8, 7, 10, 4, 4, 8, 10, 8, 16, 10, 7, 13, 6, 5, 10, 7, 7, 13, 11, 11, 10, 4, 13, 13, 16, 10, 8, 15, 14, 10, 18, 6, 13, 12, 17, 12 (list; graph; refs; listen; history; internal format)
OFFSET

0,20

LINKS

Index entries for sequences related to factorial numbers.

FORMULA

a(n) = A034886(n) - (A027869(n) + A079680(n) + A079714(n) + A079684(n) + A079690(n) + A079691(n) + A079692(n) + A079693(n) + A079694(n)). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 27 2008

CROSSREFS

Cf. A079714.

Cf. A000142, A137579, A137580.

Sequence in context: A067514 A115323 A089282 * A088598 A200751 A077083

Adjacent sequences:  A079685 A079686 A079687 * A079689 A079690 A079691

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard (hillcino368(AT)gmail.com), Jan 31 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 02:50 EST 2012. Contains 205694 sequences.