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A094409
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Odd numbers k that divide Fibonacci(k) - 1 but not Fibonacci(k-1).
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2
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323, 6479, 7743, 11663, 18407, 19043, 23407, 27071, 34943, 35207, 39203, 44099, 47519, 51983, 53663, 54839, 65471, 72831, 78089, 79547, 82983, 86063, 94667, 104663, 109871, 121103, 139359, 142883, 157079, 168299, 195227, 196559
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Range[50000], OddQ[ # ] && Mod[Fibonacci[ # ] - 1, # ] == 0 && ! Mod[Fibonacci[ # - 1], # ] == 0 &]
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CROSSREFS
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KEYWORD
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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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