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A160680
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a(n) = sigma_0(F(n-1)) + sigma_0(F(n-2)) where F=A000045 and sigma_0=A000005.
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0
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2, 3, 4, 4, 6, 6, 6, 8, 8, 6, 17, 17, 6, 12, 16, 10, 18, 20, 20, 24, 12, 6, 74, 78, 10, 20, 32, 18, 66, 68, 20, 24, 12, 12, 168, 168, 16, 16, 72, 68, 68, 66, 34, 64, 40, 10, 338, 344, 56, 56, 24, 20, 132, 144, 112, 128, 40, 12, 964, 964, 12, 40, 96, 72, 72, 72, 40, 64, 160
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OFFSET
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3,1
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LINKS
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FORMULA
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MAPLE
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MATHEMATICA
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Join[{1, 1}, Total[DivisorSigma[0, #]]&/@Partition[Fibonacci[Range[70]], 2, 1]] (* Harvey P. Dale, Mar 07 2012 *)
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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