id:A129876 - OEIS Search Results

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Sequence i_n arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition).

+0
5

2, 4, 14, 52, 210, 888, 3886, 17448 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`Jocelyn Quaintance, Combinatoric Enumeration of Two-Dimensional Proper Arrays, Discrete Math., 307 (2007), 1844-1864.`
	FORMULA	`See Quaintance reference for generating functions that produce A129872-A129886.`
	CROSSREFS	`Adjacent sequences: A129873 A129874 A129875 this_sequence A129877 A129878 A129879` `Sequence in context: A046650 A055727 A003500 this_sequence A038055 A006385 A131180`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 26 2007`

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.