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Search: id:A095139
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| 1, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 2, 3, 1, 2, 2, 3, 1, 2, 3, 2, 2, 1, 2, 2, 2, 6, 2, 1, 3, 4, 5, 2, 5, 3, 2, 3, 3, 3, 3, 2, 4, 3, 4, 5, 6, 1, 3, 2, 4, 2, 2, 4, 3, 2, 3, 6, 4, 6, 4, 3
(list; graph; listen)
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OFFSET
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1,8
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MATHEMATICA
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PrimeFactors[n_] := Flatten[ Table[ #[[1]], {1} ] & /@ FactorInteger[n]]; f[n_] := Abs[ Product[ Prime[i], {i, 2, n, 2}] + Product[ Prime[i], {i, 1, n, 2}]]; f[1] = 2; Table[ Length[ PrimeFactors[ f[n]]], {n, 72}]
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CROSSREFS
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Cf. A095137.
Sequence in context: A122921 A108128 A081326 this_sequence A109038 A080342 A081604
Adjacent sequences: A095136 A095137 A095138 this_sequence A095140 A095141 A095142
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), May 28 2004
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