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A121858
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Smallest odd number having prime(n) divisors, where prime(n) is the n-th prime=A000040(n).
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1
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3, 9, 81, 729, 59049, 531441, 43046721, 387420489, 31381059609, 22876792454961, 205891132094649, 150094635296999121, 12157665459056928801, 109418989131512359209, 8862938119652501095929, 6461081889226673298932241
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OFFSET
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1,1
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COMMENTS
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a(n) is also the smallest number k with the property that the symmetric representation of sigma(k) has prime(n) subparts. - Omar E. Pol, Oct 08 2022
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LINKS
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FORMULA
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a(n) = 3^(prime(n)-1) = 3^A006093(n).
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MATHEMATICA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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