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A020915
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Number of digits in base-3 representation of 2^n.
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10
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1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 9, 9, 10, 11, 11, 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 19, 20, 21, 21, 22, 23, 23, 24, 24, 25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 31, 32, 33, 33, 34, 35, 35, 36, 36, 37, 38, 38, 39, 40, 40, 41, 42, 42, 43, 43, 44, 45, 45, 46, 47
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OFFSET
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0,3
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COMMENTS
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LINKS
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FORMULA
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MATHEMATICA
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Table[Length[IntegerDigits[2^n, 3]], {n, 0, 80}] (* Harvey P. Dale, May 02 2012 *)
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PROG
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(Haskell)
(Magma) [Round(1+Floor(n*(Log(2))/Log(3))): n in [0..80]]; // Vincenzo Librandi, Dec 05 2015
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CROSSREFS
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KEYWORD
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nonn,base,easy,nice
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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