id:A034857 - OEIS Search Results

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C(n+2,3)+2*C(n,2)+2*(n-2).

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-1, 6, 18, 36, 61, 94, 136, 188, 251, 326, 414, 516, 633, 766, 916, 1084, 1271, 1478, 1706, 1956, 2229, 2526, 2848, 3196, 3571, 3974, 4406, 4868, 5361, 5886, 6444, 7036, 7663, 8326, 9026, 9764, 10541, 11358 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`J. Riordan, Enumeration of trees by height and diameter, IBM J. Res. Dev. 4 (1960), 473-478.`
	FORMULA	`(n^3 + 9n^2 + 8n - 24)/6. - Ralf Stephan, Feb 15 2004`
	CROSSREFS	`Adjacent sequences: A034854 A034855 A034856 this_sequence A034858 A034859 A034860` `Sequence in context: A111147 A069958 A028896 this_sequence A116367 A101853 A132432`
	KEYWORD	`sign`
	AUTHOR	`njas`

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Last modified October 15 20:12 EDT 2008. Contains 145099 sequences.

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