id:A007143 - OEIS Search Results

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E-trees with exactly 2 colors.
(Formerly M3013)

+0
1

0, 0, 3, 16, 65, 238, 866, 3138 (list; graph; listen)

	OFFSET	`1,3`
	REFERENCES	`N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).` `G. Gati, F. Harary and R. W. Robinson, Line colored trees with extendable automorphisms, Acta Math. Scientia, 2 (1982), 105-110.`
	LINKS	`Index entries for sequences related to trees`
	CROSSREFS	`Sequence in context: A073999 A155160 A037451 this_sequence A062960 A044046 A000269` `Adjacent sequences: A007140 A007141 A007142 this_sequence A007144 A007145 A007146`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.