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Search: id:A104377
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| A104377 |
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Number of distinct prime divisors of numbers derived from three consecutive concatenated odd numbers. |
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+0
1
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| 2, 3, 2, 2, 3, 4, 2, 3, 3, 2, 4, 2, 2, 2, 2
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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The number of distinct prime divisors of 135 is 2 - the first term in the sequence.
The number of distinct prime divisors of 357 is 3 - the second term in the sequence.
The number of distinct prime divisors of 579 is 2 - the third term in the sequence.
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CROSSREFS
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Sequence in context: A076733 A079643 A118480 this_sequence A109337 A137266 A062948
Adjacent sequences: A104374 A104375 A104376 this_sequence A104378 A104379 A104380
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KEYWORD
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nonn,base
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Apr 16 2005
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