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A048064 Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n-4)/2. 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 8, 32, 36, 90, 100, 245, 275, 770, 882, 2520, 2912, 7930, 9184, 24430, 28400, 76010, 88880, 239420, 281384, 755378, 890916, 2378103, 2813083 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,10

LINKS

Table of n, a(n) for n=1..33.

CROSSREFS

Sequence in context: A271901 A042875 A154745 * A122605 A037953 A296636

Adjacent sequences:  A048061 A048062 A048063 * A048065 A048066 A048067

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 19 22:22 EDT 2019. Contains 322291 sequences. (Running on oeis4.)