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A127669
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Number of numbers mapped to A127668(n) with the map described there.
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1
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1, 1, 2, 1, 2, 1, 3, 2, 2, 1, 3, 1, 2, 2, 5, 1, 3, 1, 3, 2, 2, 1, 5, 2, 2, 3, 3, 1, 3, 1, 7, 2, 2, 2, 5, 1, 2, 2, 5, 1, 3, 1, 3, 3, 2, 1, 7, 2, 3, 2, 3, 1, 5, 2, 5, 2, 2, 1, 5, 1, 2, 3, 11, 2, 3, 1, 3, 2, 3, 1, 7, 1, 2, 3, 3, 2, 3, 1, 7, 5, 2, 1, 5, 2, 2, 2, 5, 1, 5, 2, 3, 2, 2, 2, 11, 1, 3, 3, 5
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OFFSET
| 2,3
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COMMENTS
| This is not A008481(n), n>=2, which starts similarly, but differs, beginning with n=24.
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FORMULA
| a(n)=pa(Length( A127668(n))), n>=2. Length gives the number of digits and pa(k):=A000041(k) (partition numbers).
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EXAMPLE
| a(4)=2 because two numbers are mapped to 11= A127668(4), namely n=p(1)*p(1)=4 and n=p(11)=31. p(n)=A000041(n) (partition numbers).
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CROSSREFS
| Cf. a(24)=5 but A008481(24)=4.
The five numbers mapped to A127668(24)= 2111 are: 18433, 2594, 2263, 292, 24.
Sequence in context: A098893 A069248 A008481 * A056692 A039637 A194548
Adjacent sequences: A127666 A127667 A127668 * A127670 A127671 A127672
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KEYWORD
| nonn,easy
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AUTHOR
| Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Jan 23 2007
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