id:A067623 - OEIS Search Results

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Consider the power series (x+1)^(1/3)=1+x/3-x^2/9+5x^3/81+...; sequence gives denominators of coefficients.

+0
2

1, 3, 9, 81, 243, 729, 6561, 19683, 59049, 1594323, 4782969, 14348907, 129140163, 387420489, 1162261467, 10460353203, 31381059609, 94143178827, 2541865828329, 7625597484987, 22876792454961, 205891132094649 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n) are powers of 3.`
	FORMULA	`a(n) = 3^n*a(floor(n/3)). - Vladeta Jovovic (vladeta(AT)Eunet.yu), Mar 01 2004`
	CROSSREFS	`Cf. A067622.` `Equals 3^A004128(n).` `Sequence in context: A000218 A139731 A124049 this_sequence A055156 A047912 A078684` `Adjacent sequences: A067620 A067621 A067622 this_sequence A067624 A067625 A067626`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 02 2002`

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

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