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Search: id:A048091
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A048091 Number of nonempty subsets of {1,2,...,n} in which exactly 1/6 of the elements are <= (n+3)/3. +0
1
0, 0, 0, 0, 0, 0, 0, 3, 4, 24, 84, 105, 280, 630, 756, 1527, 2937, 3465, 6930, 15015, 18304, 44044, 108164, 135219, 328944, 767244, 953360, 2152710, 4738410, 5848238, 12890614, 28583709, 35471919, 80628669, 184657869 (list; graph; listen)
OFFSET

1,8

CROSSREFS

Sequence in context: A050801 A103093 A124632 this_sequence A065900 A065809 A093600

Adjacent sequences: A048088 A048089 A048090 this_sequence A048092 A048093 A048094

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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