A006422 - OEIS

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A006422

Number of rooted toroidal maps.
(Formerly M3684)

4, 47, 240, 831, 2282, 5362, 11256, 21690, 39072, 66649 (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: A065777 A193485 A141040 * A186677 A006438 A052105` `Adjacent sequences: A006419 A006420 A006421 * A006423 A006424 A006425`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 16 14:37 EST 2012. Contains 205930 sequences.