id:A063786 - OEIS Search Results

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G.f.: A(x) = (x-2*x^2-2*x^3-(1+x)*sqrt(1-4*x^2)+sqrt(1-4*x^6))/(2*x^2).

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1, 1, 1, 2, 5, 5, 14, 14, 41, 42, 132, 132, 429, 429, 1428, 1430, 4862, 4862, 16796, 16796, 58781, 58786, 208012, 208012, 742900, 742900, 2674426, 2674440, 9694845, 9694845, 35357670, 35357670, 129644748, 129644790, 477638700, 477638700 (list; graph; listen)

	OFFSET	`2,4`
	REFERENCES	`F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 78, (3.5.30). ( A(x) = s_1 bar (x) ).`
	CROSSREFS	`Cf. A000108, A000207.` `Sequence in context: A124201 A100953 A112835 this_sequence A121304 A002106 A064630` `Adjacent sequences: A063783 A063784 A063785 this_sequence A063787 A063788 A063789`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Aug 24 2001`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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