id:A129886 - OEIS Search Results

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Sequence a_{h_n} arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition), where a_n = A129878, h_n = A129874.

+0
15

1, 0, 1, 1, 6, 4, 25, 20 (list; graph; listen)

	OFFSET	`1,5`
	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: A061592 A081631 A137174 this_sequence A133837 A121682 A163934` `Adjacent sequences: A129883 A129884 A129885 this_sequence A129887 A129888 A129889`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 26 2007`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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