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A252801
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Primes whose trajectories under the map x -> A039951(x) enter the cycle {2, 1093}.
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7
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2, 5, 7, 13, 17, 23, 29, 31, 37, 41, 43
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OFFSET
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1,1
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LINKS
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EXAMPLE
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The trajectory of 31 under the given map starts 31, 7, 5, 2, 1093, 2, 1093, ..., entering the given cycle, so 31 is a term of the sequence.
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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