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A030703
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Decimal expansion of 7^n contains no zeros (probably finite).
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26
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OFFSET
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1,3
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COMMENTS
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LINKS
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Eric Weisstein's World of Mathematics, Zero
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FORMULA
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MATHEMATICA
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Select[Range[0, 100], DigitCount[7^#, 10, 0]==0&] (* Harvey P. Dale, Oct 02 2013 *)
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PROG
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CROSSREFS
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Cf. A195942, A195943, A195944, A195945, A195946, A195908, A007377, A008839, A030700, A030701, A030702, A030704, A030705, A030706.
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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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