id:A048031 - 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-3)/3.

+0
1

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 10, 11, 44, 48, 52, 130, 140, 150, 405, 440, 476, 1547, 1701, 1862, 5852, 6440, 7056, 20734, 22792, 24955, 73600, 81080, 89000, 269225, 297440, 327492, 991314, 1096627, 1209155, 3626363, 4014205 (list; graph; listen)

	OFFSET	`1,12`
	CROSSREFS	`Adjacent sequences: A048028 A048029 A048030 this_sequence A048032 A048033 A048034` `Sequence in context: A086446 A045522 A054967 this_sequence A048013 A048048 A136835`
	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