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A088811
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Number of subsets of {1, ..., n} that are sum-free but not double-free.
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2
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0, 0, 1, 1, 4, 6, 13, 19, 41, 54, 110, 157, 277, 394, 706, 970, 1691, 2376, 3905, 5494, 9130, 12355, 20262, 28146, 44316, 61761, 98023, 132891
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