id:A048042 - 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+1)/3.

+0
1

0, 0, 0, 0, 0, 0, 0, 5, 6, 7, 28, 32, 36, 90, 100, 110, 275, 306, 338, 1001, 1127, 1260, 3780, 4256, 4760, 13532, 15180, 16929, 47880, 53700, 59920, 173635, 195052, 218086, 637307, 716210, 801350, 2330900, 2618486, 2929563, 8516781 (list; graph; listen)

	OFFSET	`1,8`
	CROSSREFS	`Adjacent sequences: A048039 A048040 A048041 this_sequence A048043 A048044 A048045` `Sequence in context: A078694 A048007 A066876 this_sequence A048090 A048027 A081406`
	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