id:A048005 - OEIS Search Results

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Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n-1)/3.

+0
1

0, 0, 0, 3, 4, 5, 20, 27, 35, 119, 164, 219, 714, 1000, 1364, 4367, 6187, 8567, 27131, 38759, 54263, 170543, 245156, 346103, 1081574, 1562274, 2220074, 6906899, 10015004, 14307149, 44352164, 64512239, 92561039, 286097759 (list; graph; listen)

	OFFSET	`1,4`
	CROSSREFS	`Sequence in context: A084930 A114336 A048086 this_sequence A039573 A037347 A116474` `Adjacent sequences: A048002 A048003 A048004 this_sequence A048006 A048007 A048008`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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

AT&T Labs Research