A028445 - OEIS

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A028445

Number of cube-free words of length n on two letters.

2, 4, 6, 10, 16, 24, 36, 56, 80, 118, 174, 254, 378, 554, 802, 1168, 1716, 2502, 3650, 5324, 7754, 11320, 16502, 24054, 35058, 51144, 74540, 108664 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..28.` `A. E. Edlin, Cube-free words` `K. Jarhumaki and J. Shallit, Polynomial vs Exponential Growth in Repetition-Free Binary Words` `Eric Weisstein's World of Mathematics, Cubefree Word.`
	CROSSREFS	`Cf. A007777, A082379, A082380.` `Sequence in context: A098151 A132002 A211971 * A006305 A067247 A017985` `Adjacent sequences: A028442 A028443 A028444 * A028446 A028447 A028448`
	KEYWORD	`nonn`
	AUTHOR	`Anne Edlin (anne(AT)euclid.math.temple.edu)`
	STATUS	`approved`

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Last modified May 23 03:06 EDT 2013. Contains 225585 sequences.