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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
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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 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)