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A090207
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Number of factors of n-th nonprime Fibonacci number.
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0
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1, 1, 1, 3, 2, 2, 2, 6, 2, 3, 3, 5, 2, 4, 3, 2, 9, 3, 2, 4, 4, 7, 2, 4, 3, 2, 3, 10, 3, 3
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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FORMULA
| F(0) = 0; F(1) = 1; F(n) = F(n-1) + F(n-2); F(0:9) = 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 The nonprime numbers are: 0, 1, 1, 8, 21, 34 which have number of factors: 1, 1, 1, 3, 2, 2
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CROSSREFS
| Cf. A090206, A000045.
Sequence in context: A175333 A130845 A134653 * A202538 A065437 A097721
Adjacent sequences: A090204 A090205 A090206 * A090208 A090209 A090210
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KEYWORD
| easy,nonn
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AUTHOR
| Felix Tubiana (fat2(AT)columbia.edu), Jan 22 2004
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