id:A081603 - OEIS Search Results

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Number of 2's in ternary representation of n.

+0
15

0, 0, 1, 0, 0, 1, 1, 1, 2, 0, 0, 1, 0, 0, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 3, 0, 0, 1, 0, 0, 1, 1, 1, 2, 0, 0, 1, 0, 0, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 3, 1, 1, 2, 1, 1, 2, 2, 2, 3, 1, 1, 2, 1, 1, 2, 2, 2, 3, 2, 2, 3, 2, 2, 3, 3, 3, 4, 0, 0, 1, 0, 0, 1, 1, 1, 2, 0, 0, 1, 0, 0, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2 (list; graph; listen)

	OFFSET	`0,9`
	COMMENT	`A081602(n) + A062756(n) + a(n) = A081604(n);` `a(n) = (A053735(n) - A062756(n))/2.`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 0..10000` `Eric Weisstein's World of Mathematics, Ternary.`
	FORMULA	`a(n) = if n<3 then [n/2] else a([n/3]) + [(n mod 3)/2].`
	CROSSREFS	`Cf. A007089, A074940, A005836, A081610, A081611.` `Sequence in context: A112607 A091970 A093955 this_sequence A103612 A083913 A023670` `Adjacent sequences: A081600 A081601 A081602 this_sequence A081604 A081605 A081606`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Mar 23 2003`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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