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Search: id:A076932
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| A076932 |
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Largest k such that n*k has n divisors, or 0 if there are no possibilities for k or infinitely many. |
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+0
1
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| 1, 1, 3, 2, 125, 3, 16807, 0, 0, 125, 2357947691, 0, 1792160394037, 16807, 375, 0, 2862423051509815793, 0, 5480386857784802185939, 0, 50421, 2357947691, 39471584120695485887249589623, 0, 0, 1792160394037, 0, 0
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OFFSET
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1,3
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EXAMPLE
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a(6) = 3 (and not 2) as 18 has six divisors though 12 also has 6 divisors. a(8) = 0 as for every prime p > 2 8p has 8 divisors.
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CROSSREFS
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Cf. A073904, A076931.
Sequence in context: A109899 A002297 A076931 this_sequence A065585 A139737 A012860
Adjacent sequences: A076929 A076930 A076931 this_sequence A076933 A076934 A076935
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 18 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 21 2003
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