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A067205
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Least numbers with n = digital root = number of prime factors.
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0
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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a(7)=448 as A001222(448)=7 because of 448=2*2*2*2*2*2*7
and A010888(448)=7 because of 4+4+8=16 and 1+6=7.
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CROSSREFS
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KEYWORD
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nonn,base,fini,full
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AUTHOR
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STATUS
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approved
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