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A047181
Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n-1)/2.
0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 42, 48, 168, 189, 504, 560, 1260, 1386, 2827, 3090, 6270, 6864, 15444, 17094, 44044, 49335, 135135, 152152, 408968, 460139, 1174224, 1316904
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OFFSET
1,11
LINKS
Table of n, a(n) for n=1..34.
CROSSREFS
Sequence in context:
A152119
A041080
A042091
*
A080879
A119108
A248264
Adjacent sequences:
A047178
A047179
A047180
*
A047182
A047183
A047184
KEYWORD
nonn
AUTHOR
Clark Kimberling
STATUS
approved
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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)