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A048014 Number of nonempty subsets of {1,2,...,n} in which exactly 1/6 of the elements are <= (n-1)/3. +0
1
0, 0, 0, 0, 0, 1, 2, 12, 42, 63, 168, 378, 504, 1014, 1914, 2420, 4620, 9295, 12012, 27027, 63083, 84119, 199304, 456484, 601664, 1339464, 2896664, 3755844, 8093214, 17441739, 22591800, 49876200, 111029050, 144780009 (list; graph; listen)
OFFSET

1,7
CROSSREFS

Sequence in context: A003683 A098519 A127725 this_sequence A094702 A001621 A055681

Adjacent sequences: A048011 A048012 A048013 this_sequence A048015 A048016 A048017

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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