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Search: id:A072950
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| A072950 |
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Number of permutations p of (1,2,3,...,n) such that at least one value of abs(k-p(k))) is prime. |
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1
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| 0, 0, 3, 19, 107, 691, 4929, 39958, 361114, 3617842, 39839167, 478446607
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