id:A038077 - OEIS Search Results

Search: id:A038077

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Number of rooted identity trees with 2-colored nodes.

+0
5

2, 4, 10, 36, 132, 532, 2222, 9584, 42248, 189776, 864830, 3989656, 18593424, 87413444, 414060796, 1974260912, 9467922870, 45638482068, 221001289714, 1074591477112, 5244497440468, 25681907242416, 126149132242490 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`N. J. A. Sloane, Transforms` `Index entries for sequences related to rooted trees`
	FORMULA	`Shifts left and halves under Weigh transform. A005753*2.`
	CROSSREFS	`Cf. A004111, A038078-A038080.` `Sequence in context: A125859 A103854 A126941 this_sequence A006396 A066278 A002577` `Adjacent sequences: A038074 A038075 A038076 this_sequence A038078 A038079 A038080`
	KEYWORD	`nonn,eigen`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Jan 04 1999.`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research