id:A068091 - OEIS Search Results

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Number of board-pair-pile hexagonal polyominoes with n cells.

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1, 3, 11, 44, 186, 814, 3648, 16611, 76437, 354112, 1647344, 7682237, 35873310, 167625690, 783470179, 3662035980, 17115684065, 79986841677, 373759118882, 1746296080947 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Moa Apagodu, Counting Hexagonal Lattice Animals.` `Moa Apagodu, Counting Hexagonal Lattice Animals Using Umbral-Transfer-Matrix Method`
	MAPLE	`The sequence is generated by a Maple program that accompanies the paper "Counting Hexagonal Lattice Animals using Umbral-Transfer-Matrix Method (UTMM)"`
	CROSSREFS	`Cf. A001170.` `Adjacent sequences: A068088 A068089 A068090 this_sequence A068092 A068093 A068094` `Sequence in context: A127632 A061706 A121220 this_sequence A001207 A026887 A063018`
	KEYWORD	`hard,nonn`
	AUTHOR	`Moa Apagodu (mohamudm(AT)math.rutgers.edu), Mar 22 2002 and Oct 31 2002`

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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