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Search: id:A067247
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| A067247 |
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Number of difference sets of subsets of {1,2,...,n}, i.e. the size of {A-A : A \subset [n] }, where A-A={a_i-a_j : a_i>a_j and a_i,a_j \in A}. |
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1
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| 1, 2, 4, 6, 10, 16, 25, 39, 63, 99, 158, 253, 402, 639, 1021, 1633, 2617, 4153, 6633, 10460, 16598, 26146, 41409, 64733, 102006, 159165
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