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A133052
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Cubes of perfect numbers.
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0
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216, 21952, 122023936, 536971313152, 37765098493683020333056, 633810793114959508165535727616, 2596133574015276570584768736919552, 12259964309800138562370625617974597033693433427658801152
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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a(2)=21952 because the second perfect number is 28 and 28^3=21952.
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MATHEMATICA
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Select[Range[9*10^5], DivisorSigma[1, #] == 2*# &]^3 (* G. C. Greubel, Oct 03 2017 *)
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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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