A079691 - OEIS

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A079691

Number of 6's in n!.

0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 2, 0, 2, 1, 1, 2, 0, 2, 3, 2, 0, 4, 3, 2, 3, 3, 2, 5, 3, 4, 7, 2, 3, 5, 2, 3, 6, 5, 6, 5, 8, 4, 7, 6, 6, 9, 5, 8, 7, 3, 9, 6, 7, 4, 6, 8, 6, 6, 11, 6, 8, 8, 11, 6, 4, 11, 11, 10, 6, 5, 9, 8, 9, 8, 11, 10, 8, 11, 12, 13, 9, 11, 7, 12, 15, 15, 17, 8, 11, 16, 11 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,16`
	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) + 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: A024161 A035156 A063883 * A104450 A035226 A126043` `Adjacent sequences: A079688 A079689 A079690 * A079692 A079693 A079694`
	KEYWORD	`easy,nonn,base`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Jan 31 2003`

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Last modified February 14 20:38 EST 2012. Contains 205663 sequences.