id:A052316 - OEIS Search Results

Search: id:A052316

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Number of labeled rooted trees with n nodes and 2-colored internal (non-leaf) nodes.

+0
4

1, 4, 30, 344, 5370, 106452, 2562182, 72592816, 2367054450, 87320153900, 3595646533182, 163492924997448, 8136172620013802, 439858024910227588, 25670670464821310070, 1608575860476990991712, 107716675117341985862370 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`N. J. A. Sloane, Transforms` `Index entries for sequences related to rooted trees`
	FORMULA	`Divides by 2n and shifts left under exponential transform.` `E.g.f.: -x-LambertW(-2xexp(-x)). - Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 17 2003`
	CROSSREFS	`Cf. A004113, A004114, A052317.` `Sequence in context: A121413 A001761 A099712 this_sequence A089918 A132622 A118792` `Adjacent sequences: A052313 A052314 A052315 this_sequence A052317 A052318 A052319`
	KEYWORD	`nonn,eigen`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Dec 15 1999.`

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

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