id:A122840 - OEIS Search Results

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a(n) is the number of 0s at the end of n when n is written in base 10.

+0
4

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0 (list; graph; listen)

	OFFSET	`1,100`
	COMMENT	`Greatest k such that 10^k divides n.` `a(n) = the number of digits in n - A160093(n).`
	FORMULA	`a(n) = A112765(n) * (1 - n mod 2).` `a(n) = A160094(n) - 1.`
	EXAMPLE	`a(160) = 1 because there is 1 zero at the end of 160 when 160 is written in base 10.`
	CROSSREFS	`A007814 is the base 2 equivalent of this sequence.` `Cf. A160094, A160093, A001511, A070940, A122841.` `Sequence in context: A118553 A102448 A102683 this_sequence A083919 A063665 A072507` `Adjacent sequences: A122837 A122838 A122839 this_sequence A122841 A122842 A122843`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 13 2006`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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