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Search: id:A147920
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| A147920 |
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Number of permutations of floor(i*7/3), i=0..n-1, with all sums of two adjacent terms unique. |
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1
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| 1, 2, 6, 24, 74, 368, 2434, 12876, 95120, 838244, 6232926, 59671520, 674514660, 6450680100, 77573342320, 1056425822904
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