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Search: id:A104483
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| A104483 |
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Number of distinct prime divisors of 33...337 (with n 3s). |
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+0
4
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| 1, 1, 2, 3, 1, 3, 3, 2, 2, 2, 3, 3, 4, 4, 3, 4, 3, 3, 4, 5, 4, 4, 4, 4, 4, 5, 3, 4, 2, 4, 4, 5, 4, 4, 4, 8, 2, 2, 2, 3, 5, 4, 6, 6, 1, 5, 3, 4, 5, 4
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OFFSET
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0,3
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COMMENT
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Number of distinct prime factors of (10^(n + 1) - 1)/3 + 4. - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Mar 06 2006
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EXAMPLE
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The number of distinct prime divisors of 37 is 1 (prime).
The number of distinct prime divisors of 337 is 1 (prime).
The number of distinct prime divisors of 3337 is 2.
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MATHEMATICA
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Table[Length[FactorInteger[(10^(n + 1) - 1)/3 + 4]], {n, 1, 50}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Mar 06 2006
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CROSSREFS
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Sequence in context: A071282 A107796 A039702 this_sequence A080717 A121062 A045831
Adjacent sequences: A104480 A104481 A104482 this_sequence A104484 A104485 A104486
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Apr 18 2005
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Mar 06 2006
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