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A048032 Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= (n-3)/3. 0
0, 0, 0, 0, 0, 5, 15, 35, 70, 141, 261, 405, 765, 1485, 2310, 4954, 10634, 16575, 35945, 75725, 113815, 240385, 502945, 744345, 1595433, 3411849, 5036862, 10959446, 23631286, 34636245, 75326163, 162418479, 236331302, 514828047 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,6
LINKS
CROSSREFS
Sequence in context: A195760 A195761 A100355 * A019499 A229885 A363618
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 24 10:00 EDT 2024. Contains 371935 sequences. (Running on oeis4.)