A094656 - OEIS

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A094656

Number of unlabeled 12-gonal 2-trees with n 12-gons.

1, 1, 1, 7, 55, 840, 15189, 309607, 6671842, 149850849, 3471296793, 82442359291, 1998559329142, 49290785442796, 1233639304644946, 31268489727956101, 801335133177932829, 20736286803363051714, 541224489038545084067 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`G. Labelle, C. Lamathe and P. Leroux, Labeled and unlabeled enumeration of k-gonal 2-trees`
	CROSSREFS	`Cf. A054581.` `Sequence in context: A054910 A028562 A180829 * A117993 A055056 A197228` `Adjacent sequences: A094653 A094654 A094655 * A094657 A094658 A094659`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 06 2004`

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Last modified February 17 12:38 EST 2012. Contains 206021 sequences.