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A070761
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Values of floor((4/3)^n) that are composite.
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2
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4, 9, 42, 56, 74, 99, 133, 177, 236, 315, 420, 560, 747, 996, 1328, 1771, 2362, 3149, 4199, 5599, 7466, 9954, 13273, 17697, 23596, 31462, 41950, 74577, 99437, 132583, 235703, 314271, 419028, 558704, 744938, 993251, 1324335, 1765780, 2354374
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OFFSET
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1,1
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REFERENCES
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R. K. Guy, Unsolved Problems in Number Theory, E19
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LINKS
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MATHEMATICA
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Select[Rest[Union[Floor[(4/3)^Range[80]]]], !PrimeQ[#]&] (* Harvey P. Dale, Sep 23 2011 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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