A006413 - OEIS

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A006413

Nonseparable planar tree-rooted maps.
(Formerly M4031)

5, 210, 3150, 27556, 170793, 829920, 3359356, 11786190, 36845718 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	REFERENCES	`N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).` `Walsh, T. R. S.; Lehman, A. B.; Counting rooted maps by genus. III: Nonseparable maps. J. Combinatorial Theory Ser. B 18 (1975), 222-259.`
	CROSSREFS	`Sequence in context: A144139 A020541 A027682 * A055316 A203470 A165208` `Adjacent sequences: A006410 A006411 A006412 * A006414 A006415 A006416`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 03:59 EST 2012. Contains 205694 sequences.