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A132181 a(n)=smallest positive integer such that product{k=1 to n}(1+1/a(k)) has a prime numerator. +0
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1, 2, 6, 1, 28, 1, 1, 58, 1, 708, 1, 1, 2, 1, 2836, 1, 1, 22696, 1, 1, 1, 590122, 1, 12, 1, 1, 2, 1, 1180246, 1, 9441976, 1, 1, 1, 169955586, 1, 2, 1, 2, 1, 2719289392, 1, 1, 1, 1, 5438578786, 1, 32631472722, 1, 2, 1, 391577672676, 1, 1, 2, 1, 1566310690708, 1, 1 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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