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A088810
Number of subsets of {1, ..., n} that are double-free but not sum-free.
+0
3
0, 0, 0, 0, 1, 4, 6, 18, 35, 84, 137, 323, 591, 1313, 2033, 4360, 7406, 15581, 23682, 49184, 84017, 171744, 259818, 528784, 853143, 1727011, 2601181, 5243126
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.
AT&T Labs Research
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