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A139320
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If A139319(n) = the smallest value of the form n*k - 1, k = positive integer, that is coprime to all the previous terms of sequence A139319 and A139319(1)=1, then a(n) = k = (A139319(n)+1)/n.
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2
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2, 1, 1, 1, 4, 1, 2, 1, 2, 3, 4, 1
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