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Search: id:A051595
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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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+0
2
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| 429552, 497808, 800496, 2472912, 3329712, 4925808, 5033808, 5470632, 5756616, 7584408, 7696368, 8498952, 13172000
(list; graph; listen)
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OFFSET
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0,1
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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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Cf. A051594, A049060.
Sequence in context: A084734 A130022 A003828 this_sequence A117318 A085092 A117151
Adjacent sequences: A051592 A051593 A051594 this_sequence A051596 A051597 A051598
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KEYWORD
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nonn,more
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AUTHOR
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Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp)
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EXTENSIONS
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Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Nov 06 2006
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