id:A088953 - OEIS Search Results

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Number of numbers that are ternary square-free words of length n.

+0
2

1, 3, 4, 8, 12, 20, 28, 40, 52, 72, 96, 136, 176, 228, 304, 412, 532, 696, 928, 1220, 1592, 2120, 2764, 3612, 4688, 6132, 7928, 10324, 13480, 17616, 22948, 29908, 38964, 50748, 66184, 86344, 112364, 146344, 190500 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n) = A006156(a(n))*2/3 for n>1.`
	LINKS	`Eric Weisstein's World of Mathematics, Squarefree Word`
	CROSSREFS	`Cf. A088952, A007089.` `Sequence in context: A146566 A064188 A147620 this_sequence A025034 A145722 A147622` `Adjacent sequences: A088950 A088951 A088952 this_sequence A088954 A088955 A088956`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 25 2003`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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