id:A123888 - OEIS Search Results

Search: id:A123888

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G.f.: x/((1-x^2)^3-1+x).

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1, 3, 9, 24, 63, 163, 420, 1080, 2775, 7128, 18307, 47016, 120744, 310086, 796338, 2045089, 5252025, 13487805, 34638234, 88954965, 228446569, 586677030, 1506654000, 3869260527, 9936705456, 25518600937, 65534698260, 168300632412, 432215354952, 1109978675532 (list; graph; listen)

	OFFSET	`0,2`
	REFERENCES	`A. Burstein and T. Mansour, Words restricted by 3-letter ..., Annals. Combin., 7 (2003), 1-14.`
	LINKS	`A. Burstein and T. Mansour, Words restricted by 3-letter ....`
	CROSSREFS	`Sequence in context: A018788 A098690 A090400 this_sequence A097134 A123892 A064831` `Adjacent sequences: A123885 A123886 A123887 this_sequence A123889 A123890 A123891`
	KEYWORD	`nonn`
	AUTHOR	`njas, Nov 20 2006`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

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