id:A048068 - OEIS Search Results

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Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the elements are <= (n-4)/2.

+0
1

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 9, 45, 50, 150, 165, 385, 420, 906, 988, 2340, 2583, 7035, 7875, 22275, 25080, 67880, 76415, 196027, 220389, 551733, 620711 (list; graph; listen)

	OFFSET	`1,12`
	CROSSREFS	`Sequence in context: A075079 A041933 A041138 this_sequence A037957 A103315 A042847` `Adjacent sequences: A048065 A048066 A048067 this_sequence A048069 A048070 A048071`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research