id:A058478 - OEIS Search Results

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Total number of interior nodes in all essentially series series-parallel networks with n labeled edges, multiple edges allowed.

+0
3

0, 0, 1, 5, 46, 534, 7596, 127756, 2479856, 54560512, 1341716960, 36468949824, 1085680795200, 35131589529152, 1227777836217856, 46086892351150592, 1849266301464495616, 78990342571085637120, 3578513340735623076864 (list; graph; listen)

	OFFSET	`0,4`
	REFERENCES	`J. W. Moon, Some enumerative results on series-parallel networks, Annals Discrete Math., 33 (1987), 199-226 (the e.g.f. I_S(x)).`
	LINKS	`Index entries for sequences mentioned in Moon (1987)`
	FORMULA	`E.g.f. = (xP'-P)/(1+U), where P = e.g.f. for A000311 and U that for A006351.`
	CROSSREFS	`A058480 = A058478 + A058479.` `Sequence in context: A042533 A127304 A112029 this_sequence A121631 A071214 A052873` `Adjacent sequences: A058475 A058476 A058477 this_sequence A058479 A058480 A058481`
	KEYWORD	`nonn`
	AUTHOR	`njas, Dec 20 2000`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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