id:A003698 - OEIS Search Results

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Number of 2-factors in C_4 X P_n.

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1, 9, 53, 341, 2169, 13825, 88093, 561357, 3577121, 22794425, 145252485, 925589701, 5898117961, 37584466929, 239498796653, 1526153708861, 9725080775409, 61970950592425, 394896331045333, 2516390514947637 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`F. Faase, Counting Hamilton cycles in product graphs`
	FORMULA	`a(n) = 6a(n-1) + 3a(n-2) - 4a(n-3), n>3.`
	CROSSREFS	`Sequence in context: A122588 A005025 A038761 this_sequence A001688 A052108 A093846` `Adjacent sequences: A003695 A003696 A003697 this_sequence A003699 A003700 A003701`
	KEYWORD	`nonn`
	AUTHOR	`Frans Faase (Frans_LiXia(AT)wxs.nl)`

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

AT&T Labs Research