id:A129882 - OEIS Search Results

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Sequence i_{t_n} arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition), where i_n = A129876, t_n = A129875.

+0
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0, 2, 4, 4, 12, 18, 56, 72 (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: A000936 A065449 A130618 this_sequence A129017 A086915 A059927` `Adjacent sequences: A129879 A129880 A129881 this_sequence A129883 A129884 A129885`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 26 2007`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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