id:A001344 - OEIS Search Results

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Sum (n+k)! C(2,k), k = 0 . . 2.
(Formerly M1405 N0548)

+0
2

2, 5, 11, 38, 174, 984, 6600, 51120, 448560, 4394880, 47537280, 562464000, 7224940800, 100111334400, 1488257971200, 23625316915200, 398840682240000, 7134671351808000 (list; graph; listen)

	OFFSET	`-1,1`
	REFERENCES	`Biondi, E.; Divieti, L.; Guardabassi, G.; Counting paths, circuits, chains, and cycles in graphs: A unified approach. Canad. J. Math. 22 1970 22-35.`
	CROSSREFS	`Adjacent sequences: A001341 A001342 A001343 this_sequence A001345 A001346 A001347` `Sequence in context: A092298 A131581 A056301 this_sequence A056302 A065850 A106886`
	KEYWORD	`nonn,easy`
	AUTHOR	`njas`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

AT&T Labs Research