id:A129884 - OEIS Search Results

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Sequence a_{s_n} arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition), where a_n = A129878, s_n = A129873.

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1, 1, 4, 4, 16, 17, 72, 79 (list; graph; listen)

	OFFSET	`1,3`
	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: A141125 A164111 A164906 this_sequence A137725 A082649 A156232` `Adjacent sequences: A129881 A129882 A129883 this_sequence A129885 A129886 A129887`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 26 2007`

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.

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