id:A054936 - OEIS Search Results

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Number of achiral planar maps on n nodes up to orientation-preserving isomorphisms.

+0
1

2, 4, 14, 47, 184, 761, 3314, 14997, 69886, 333884 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Is this the same as A006443? [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 13 2008]`
	LINKS	`V. A. Liskovets, Some easily derivable sequences, J. Integer Sequences, 3 (2000), #00.2.2.`
	CROSSREFS	`Sequence in context: A149852 A005437 A062868 this_sequence A006443 A152103 A102879` `Adjacent sequences: A054933 A054934 A054935 this_sequence A054937 A054938 A054939`
	KEYWORD	`nonn,easy,more`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 24 2000`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.