id:A129881 - OEIS Search Results

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Sequence i_{s_n} arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition), where i_n = A129876, s_n = A129873.

+0
2

2, 2, 6, 6, 22, 24, 90, 100 (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	`Sequence in context: A128057 A128014 A135401 this_sequence A132369 A081123 A056038` `Adjacent sequences: A129878 A129879 A129880 this_sequence A129882 A129883 A129884`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 26 2007`

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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