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Search: id:A086564
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| A086564 |
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Smallest k such that 10^k + 1 has n distinct prime divisors. |
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+0
1
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| 0, 4, 3, 11, 9, 36, 15, 33, 39, 69, 63, 45
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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All subsequent terms are > 71. - David Wasserman (wasserma(AT)spawar.navy.mil), Mar 28 2005
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FORMULA
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a(n) = Log to the base 10 of {A086563(n)-1}.
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EXAMPLE
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a(5) = 9 = Log to the base 10 {1000000001 - 1}.
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CROSSREFS
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Cf. A086563.
Adjacent sequences: A086561 A086562 A086563 this_sequence A086565 A086566 A086567
Sequence in context: A100492 A072183 A005013 this_sequence A080777 A001166 A065337
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KEYWORD
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more,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 31 2003
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Sep 22 2003
a(10)-a(12) from David Wasserman (wasserma(AT)spawar.navy.mil), Mar 28 2005
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