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A174417
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Nonprimes that contain digits 0 and 1 only.
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2
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1, 10, 100, 110, 111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111, 10000, 10001, 10010, 10011, 10100, 10101, 10110, 11000, 11001, 11010, 11011, 11100, 11101, 11110, 11111, 100000, 100001, 100010, 100011, 100100, 100101, 100110, 100111
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OFFSET
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1,2
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COMMENTS
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a(n) = binary expansion of numbers A174416(n) (i.e. numbers whose binary expansion is a decimal nonprime).
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LINKS
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MATHEMATICA
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Select[Sort[Flatten[Table[FromDigits/@(Join[{1}, #]&/@Tuples[{1, 0}, n]), {n, 0, 5}]]], !PrimeQ[#]&] (* Harvey P. Dale, Dec 26 2015 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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