id:A129875 - OEIS Search Results

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

+0
3

0, 2, 4, 9, 22, 45, 120, 239 (list; graph; listen)

	OFFSET	`1,2`
	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	`Sequence in context: A148076 A156801 A057580 this_sequence A055094 A055729 A048211` `Adjacent sequences: A129872 A129873 A129874 this_sequence A129876 A129877 A129878`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 26 2007`

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Last modified December 6 22:51 EST 2009. Contains 170429 sequences.