id:A108693 - OEIS Search Results

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Number of circular sequences of distinct positive integers between 1 and n such that the sum of any two consecutive elements is at least n+1.

+0
1

1, 2, 4, 8, 15, 36, 80, 244, 677, 2530 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`For n=4 the circular sequences are 3, 4, 14, 23, 24, 34, 234 and 243, so a(4)=8.`
	CROSSREFS	`Sequence in context: A061030 A036661 A145671 this_sequence A007673 A026096 A098864` `Adjacent sequences: A108690 A108691 A108692 this_sequence A108694 A108695 A108696`
	KEYWORD	`nonn`
	AUTHOR	`Daniel Gulotta (dgulotta(AT)mit.edu), Jun 18 2005`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.