id:A047169 - 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/2.

+0
1

0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 30, 36, 126, 147, 392, 448, 1008, 1134, 2304, 2565, 5115, 5687, 12342, 13860, 34320, 39039, 104104, 119119, 315679, 360815, 913640, 1039808, 2508928, 2842604 (list; graph; listen)

	OFFSET	`1,9`
	CROSSREFS	`Sequence in context: A002352 A042647 A041273 this_sequence A124482 A128867 A013468` `Adjacent sequences: A047166 A047167 A047168 this_sequence A047170 A047171 A047172`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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