id:A047180 - OEIS Search Results

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Number of nonempty subsets of {1,2,...,n} in which exactly 1/6 of the elements are <= (n-1)/2.

+0
1

0, 0, 0, 0, 0, 0, 0, 3, 4, 24, 30, 105, 126, 336, 392, 882, 1008, 2044, 2304, 4554, 5115, 10890, 12342, 29887, 34320, 90090, 104104, 273559, 315679, 795704, 913640, 2196740, 2508928, 5845008 (list; graph; listen)

	OFFSET	`1,8`
	CROSSREFS	`Adjacent sequences: A047177 A047178 A047179 this_sequence A047181 A047182 A047183` `Sequence in context: A041861 A042377 A032831 this_sequence A051394 A050801 A103093`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.

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