id:A048034 - OEIS Search Results

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Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n-3)/3.

+0
1

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 45, 55, 220, 264, 312, 780, 910, 1050, 3465, 4220, 5100, 21420, 26775, 33117, 118104, 146300, 179340, 574644, 708477, 866019, 2899380, 3610540, 4463500, 15634300, 19623175, 24446565, 83635695 (list; graph; listen)

	OFFSET	`1,12`
	CROSSREFS	`Sequence in context: A062519 A138566 A062034 this_sequence A068143 A083674 A064597` `Adjacent sequences: A048031 A048032 A048033 this_sequence A048035 A048036 A048037`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

AT&T Labs Research