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Search: id:A132589
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| A132589 |
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Let c(k) be the k-th term of the flattened irregular array where the m-th row contains the positive integers that are <= m and are coprime to m. (c(k) = A038566(k).) Then a(n) = GCD(c(n),n). |
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3
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| 1, 1, 1, 2, 1, 3, 1, 2, 3, 2, 1, 1, 1, 2, 3, 4, 1, 6, 1, 1, 1, 1, 1, 2, 1, 1, 1, 4
(list; graph; listen)
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OFFSET
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1,4
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EXAMPLE
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A038566: 1,1,1,2,1,3,1,2,3,4,1,5,1,2,...
The 14th term of this list is 2.
So a(14) = GCD(2,14) = 2.
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CROSSREFS
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Cf. A132587, A132588, A038566.
Sequence in context: A070094 A105497 A132662 this_sequence A054843 A038566 A020652
Adjacent sequences: A132586 A132587 A132588 this_sequence A132590 A132591 A132592
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KEYWORD
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more,nonn
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AUTHOR
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Leroy Quet (qq-quet(AT)mindspring.com), Aug 23 2007
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