id:A063842 - OEIS Search Results

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Number of n-multigraphs on 4 nodes.

+0
3

1, 11, 66, 276, 900, 2451, 5831, 12496, 24651, 45475, 79376, 132276, 211926, 328251, 493725, 723776, 1037221, 1456731, 2009326, 2726900, 3646776, 4812291, 6273411, 8087376, 10319375, 13043251, 16342236, 20309716, 25050026, 30679275 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Vladeta Jovovic, Formulae for the number T(n,k) of n-multigraphs on k nodes`
	FORMULA	`a(n) = 1/4!(n^6 + 6n^5 + 24n^4 + 56n^3 + 83n^2 + 70n + 24).`
	CROSSREFS	`A row of A063841. Cf. A063843.` `Sequence in context: A054490 A126479 A139611 this_sequence A008503 A008493 A001287` `Adjacent sequences: A063839 A063840 A063841 this_sequence A063843 A063844 A063845`
	KEYWORD	`nonn,easy`
	AUTHOR	`njas, Aug 25 2001`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)Eunet.yu), Sep 02 2001`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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