id:A108525 - OEIS Search Results

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Number of increasing ordered rooted trees with n generators.

+0
2

1, 3, 27, 429, 9609, 277107, 9772803, 407452221, 19604840481, 1069202914083, 65177482634667, 4391636680582029, 324102772814580729, 25999541378465556627, 2252597527900572815763, 209625760563134613131421 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`A generator is a leaf or a node with just one child.` `In an increasing rooted tree, nodes are numbered and numbers increase as you move away from root.`
	LINKS	`Index entries for sequences related to rooted trees`
	FORMULA	`E.g.f. satisfies 2*A(x) = x - 1 + A'(x) + 1/(1-A(x))`
	CROSSREFS	`Cf. A108521-A108529, A001147.` `Sequence in context: A141057 A011781 A094577 this_sequence A136719 A159600 A159601` `Adjacent sequences: A108522 A108523 A108524 this_sequence A108526 A108527 A108528`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Jun 07 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research