id:A159616 - OEIS Search Results

Search: id:A159616

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G.f.: (1-x)/(1-5x-2x^2+8x^3).

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1, 4, 22, 110, 562, 2854, 14514, 73782, 375106, 1906982, 9694866, 49287446, 250571106, 1273871494, 6476200114, 32924174710, 167382301826, 850950257638, 4326122494162, 21993454571478, 111811915784610, 568437508112710 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Number of tilings of a 2xn board with squares of 1 color and dominoes of 2 colors if n>2. The number of tilings is 3 if n=1, and 17 if n=2.`
	LINKS	`M. Katz, C. Stenson, Tiling a 2xn-board with squares and dominoes, J. Int. Seq. 12 (2009) # 09.2.2`
	CROSSREFS	`Cf. A030186, A102436, A159617.` `Sequence in context: A108840 A007994 A006651 this_sequence A144047 A077543 A084157` `Adjacent sequences: A159613 A159614 A159615 this_sequence A159617 A159618 A159619`
	KEYWORD	`easy,nonn`
	AUTHOR	`R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 17 2009`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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