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A051594 Maximal elements of pairs of "(-1)sigma amicable numbers", sorted by their minimal elements. 1
466200, 604656, 1103760, 2580048, 3652560, 5823216, 5255856, 5733288, 6941160, 7780968, 7738128, 11063448, 16588192, 14914224, 19592496, 17928144, 21614544, 20934576, 23009200, 22829040, 28157688, 29892800, 25180848, 28536300 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
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 b; A051595 gives the values of a.
CROSSREFS
Sequence in context: A206759 A257951 A213461 * A238045 A341152 A096889
KEYWORD
nonn
AUTHOR
EXTENSIONS
Edited by Dean Hickerson, Nov 06 2006
More terms from Max Alekseyev, Jan 31 2010
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)