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A051595 Minimal elements of pairs of "(-1)sigma amicable numbers", sorted by their minimal elements. 1
429552, 497808, 800496, 2472912, 3329712, 4925808, 5033808, 5470632, 5756616, 7584408, 7696368, 8498952, 13172000, 14484816, 16112304, 17901936, 18349776, 20867184, 21395600, 21895920, 22581000, 24395200, 24805872, 27369900 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..23.

FORMULA

(-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.

CROSSREFS

Cf. A051594, A049060.

Sequence in context: A234448 A269798 A251639 * A234857 A186593 A233620

Adjacent sequences:  A051592 A051593 A051594 * A051596 A051597 A051598

KEYWORD

nonn

AUTHOR

Yasutoshi Kohmoto

EXTENSIONS

Edited by Dean Hickerson, Nov 06 2006

More terms from Max Alekseyev, Jan 31 2010

STATUS

approved

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Last modified July 18 21:25 EDT 2019. Contains 325144 sequences. (Running on oeis4.)