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A051595
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Minimal elements of pairs of "(-1)sigma amicable numbers", sorted by their minimal elements.
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1
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429552, 497808, 800496, 2472912, 3329712, 4925808, 5033808, 5470632, 5756616, 7584408, 7696368, 8498952, 13172000, 14484816, 16112304, 17901936, 18349776, 20867184, 21395600, 21895920, 22581000, 24395200, 24805872, 27369900
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OFFSET
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0,1
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LINKS
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FORMULA
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(-1)sigma(a) = (-1)sigma(b) = a+b where a<b. Here (-1)sigma(n) = A049060(n): If n = Product p(i)^r(i) then (-1)sigma(n) = Product(-1+Sum p(i)^s, s=1 to r(i)). This sequence gives the values of a; A051594 gives the values of b.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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