id:A048086 - OEIS Search Results

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Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n+3)/3.

+0
1

0, 0, 0, 0, 0, 3, 4, 5, 20, 24, 28, 70, 80, 90, 216, 245, 275, 770, 882, 1001, 2912, 3332, 3780, 10535, 11984, 13532, 37400, 42450, 47880, 135432, 153780, 173635, 497245, 564399, 637307, 1822106, 2065778, 2330900, 6665750 (list; graph; listen)

	OFFSET	`1,6`
	CROSSREFS	`Adjacent sequences: A048083 A048084 A048085 this_sequence A048087 A048088 A048089` `Sequence in context: A059184 A084930 A114336 this_sequence A048005 A039573 A037347`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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

AT&T Labs Research