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A216826
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Largest prime factor of the n-th primary pseudoperfect number A054377(n).
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3
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OFFSET
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1,1
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COMMENTS
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See A054377 for comments, references, and links.
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LINKS
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EXAMPLE
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42 = 2*3*7 is the third primary pseudoperfect number, so a(3) = 7.
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MATHEMATICA
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A054377 = Cases[Import["https://oeis.org/A054377/b054377.txt", "Table"], {_, _}][[All, 2]];
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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