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A048034 Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n-3)/3. 0
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; refs; listen; history; text; internal format)
OFFSET

1,12

LINKS

Table of n, a(n) for n=1..39.

CROSSREFS

Sequence in context: A062034 A250641 A168107 * A195528 A144291 A068143

Adjacent sequences: A048031 A048032 A048033 * A048035 A048036 A048037

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 1 14:50 EDT 2023. Contains 361695 sequences. (Running on oeis4.)