id:A038059 - OEIS Search Results

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Number of rooted trees with 3-colored nodes.

+0
3

3, 9, 45, 246, 1485, 9432, 62625, 428319, 3000393, 21410436, 155106693, 1137703869, 8432624850, 63060142671, 475196487363, 3604851603690, 27507181503069, 210988219961637, 1625848092941463, 12580709718788622 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences related to rooted trees` `Index entries for sequences related to trees` `N. J. A. Sloane, Transforms`
	FORMULA	`Shifts left and divides by 3 under Euler transform. A006964*3.`
	CROSSREFS	`Cf. A000081, A038055-A038062.` `Sequence in context: A000246 A103620 A138315 this_sequence A004990 A027616 A013492` `Adjacent sequences: A038056 A038057 A038058 this_sequence A038060 A038061 A038062`
	KEYWORD	`nonn,eigen`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Jan 04 1999.`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

AT&T Labs Research