A006293 - OEIS

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A006293

Pseudo-bricks with n nodes.
(Formerly M4015)

1, 5, 56, 945, 28569, 1421360 (list; graph; refs; listen; history; internal format)

	OFFSET	`4,2`
	REFERENCES	`N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).` `Walsh, T. R. S.; Counting unlabeled three-connected and homeomorphically irreducible two-connected graphs. J. Combin. Theory Ser. B 32 (1982), no. 1, 12-32.`
	LINKS	`Index entries for sequences related to bricks`
	CROSSREFS	`Cf. A006291, A006292.` `Sequence in context: A174249 A073563 A006658 * A132618 A192562 A060080` `Adjacent sequences: A006290 A006291 A006292 * A006294 A006295 A006296`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 16 10:07 EST 2012. Contains 205904 sequences.