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A048094
Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= sqrt(n).
+0
1
0, 0, 1, 2, 6, 13, 25, 45, 91, 175, 322, 570, 975, 1617, 2607, 7425, 12753, 21385, 35065, 56302, 88638, 136986, 208050, 310840, 1251606, 1973706, 3065931, 4694921, 7092211, 10575635, 15576535, 22674015, 32637675, 46480475
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.
AT&T Labs Research
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