A081604 - OEIS

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A081604

String-length of ternary representation of n.

1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	COMMENTS	`a(n)=A077267(n)+A062756(n)+A081603(n);` `for n>0: a(n)=A062153(n)+1.` `0<=A134021(n)-a(n)<=1; a(A134025(n))=A134021(A134025(n)); a(A134026(n))=A134021(A134026(n))-1. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 19 2007`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 0..10000` `Eric Weisstein's World of Mathematics, Ternary.`
	FORMULA	`a(n+1)=-sum(k=1..n,mu(3k)floor(n/k)) [From Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 21 2009]`
	CROSSREFS	`Cf. A007089.` `Cf. A080342. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 17 2008]` `Sequence in context: A109038 A185679 A080342 * A123119 A099396 A126235` `Adjacent sequences: A081601 A081602 A081603 * A081605 A081606 A081607`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 23 2003`

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Last modified February 17 02:08 EST 2012. Contains 205978 sequences.