id:A011952 - OEIS Search Results

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A011952

Number of Barlow packings with group P3(bar)m1(O) that repeat after 2n layers.

+0
1

2, 3, 8, 16, 40, 73, 165, 320, 666, 1323, 2709, 5364, 10880, 21675, 43577, 87040, 174590, 348787, 698709, 1396736, 2795400, 5589672 (list; graph; listen)

	OFFSET	`4,1`
	REFERENCES	`T. J. McLarnan, The numbers of polytypes ..., Zeits. Krist. 155, 269-291 (1981).`
	CROSSREFS	`Sequence in context: A153699 A100321 A121133 this_sequence A032104 A051573 A005648` `Adjacent sequences: A011949 A011950 A011951 this_sequence A011953 A011954 A011955`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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