A006408 - OEIS

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A006408

Number of rooted nonseparable maps on the torus.
(Formerly M3672)

4, 39, 190, 651, 1792, 4242, 8988, 17490, 31812 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,1`
	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: A093850 A201740 A024212 * A112460 A059945 A198853` `Adjacent sequences: A006405 A006406 A006407 * A006409 A006410 A006411`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.