id:A006897 - OEIS Search Results

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Hierarchical linear models on n factors allowing 2-way interactions; or graphs with <= n nodes.
(Formerly M1153)

+0
1

1, 2, 4, 8, 19, 53, 209, 1253, 13599, 288267, 12293435, 1031291299, 166122463891, 50668153831843, 29104823811067331, 31455590793615376099, 64032471295321173271027 (list; graph; listen)

	OFFSET	`0,2`
	REFERENCES	`R. C. Read and R. J. Wilson, An Atlas of Graphs, Oxford, 1998.`
	EXAMPLE	`a(2)=4 includes null graph [], G1=[o], G2=[o o], G3=[o-o].`
	CROSSREFS	`Partial sums of A000088.` `Adjacent sequences: A006894 A006895 A006896 this_sequence A006898 A006899 A006900` `Sequence in context: A100133 A099598 A128816 this_sequence A034767 A005518 A014225`
	KEYWORD	`easy,nonn,nice`
	AUTHOR	`C. L. Mallows (colinm(AT)research.avayalabs.com)`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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