A079692 - OEIS

This site is supported by donations to The OEIS Foundation.

A079692

Number of 7's in n!.

0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 2, 2, 1, 1, 3, 0, 1, 2, 6, 2, 1, 0, 0, 1, 1, 3, 0, 4, 1, 1, 2, 2, 4, 3, 4, 4, 4, 3, 3, 4, 4, 4, 1, 2, 8, 5, 5, 3, 8, 5, 7, 4, 9, 4, 4, 7, 7, 6, 8, 8, 3, 9, 8, 6, 8, 8, 9, 10, 12, 7, 7, 9, 9, 7, 1, 0, 10, 9, 14, 11, 12, 9, 7, 13, 17, 2, 11, 12, 19, 15, 12, 10, 15 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,15`
	LINKS	`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) + A079693(n) + A079694(n)). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 27 2008`
	CROSSREFS	`Cf. A079714.` `Cf. A000142, A137579, A137580.` `Sequence in context: A131373 A034853 A110283 * A110269 A120964 A184305` `Adjacent sequences: A079689 A079690 A079691 * A079693 A079694 A079695`
	KEYWORD	`easy,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Jan 31 2003`

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

Last modified February 17 10:05 EST 2012. Contains 206009 sequences.