id:A123892 - OEIS Search Results

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G.f.: -(1+x^2)*(1+2*x^2)/(-1-3*x^2-2*x^4+3*x+6*x^3+2*x^5).

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1, 3, 9, 24, 63, 167, 444, 1179, 3129, 8306, 22051, 58539, 155400, 412535, 1095149, 2907266, 7717839, 20488343, 54389880, 144387411, 383301505, 1017540554, 2701238539, 7170907923, 19036423288, 50535499231, 134155279397, 356138541458, 945431750839, 2509813152639 (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: A090400 A123888 A097134 this_sequence A064831 A096168 A051042` `Adjacent sequences: A123889 A123890 A123891 this_sequence A123893 A123894 A123895`
	KEYWORD	`nonn`
	AUTHOR	`njas, Nov 20 2006`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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