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A047164 Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= n/2. 0
0, 0, 0, 0, 0, 3, 4, 16, 20, 50, 60, 135, 161, 392, 476, 1232, 1512, 3864, 4740, 11850, 14520, 36300, 44572, 112519, 138567, 351351, 433433, 1098188, 1355900, 3433703, 4243148, 10758608, 13308416, 33794504 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..34.

CROSSREFS

Sequence in context: A325212 A329890 A330299 * A304988 A108653 A316194

Adjacent sequences:  A047161 A047162 A047163 * A047165 A047166 A047167

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 5 00:43 EDT 2020. Contains 333238 sequences. (Running on oeis4.)