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A136409
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a(n) = floor(n*log_3(2)).
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7
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0, 0, 1, 1, 2, 3, 3, 4, 5, 5, 6, 6, 7, 8, 8, 9, 10, 10, 11, 11, 12, 13, 13, 14, 15, 15, 16, 17, 17, 18, 18, 19, 20, 20, 21, 22, 22, 23, 23, 24, 25, 25, 26, 27, 27, 28, 29, 29, 30, 30, 31, 32, 32, 33, 34, 34, 35, 35, 36, 37, 37, 38, 39, 39, 40, 41, 41, 42, 42, 43, 44, 44, 45, 46, 46
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OFFSET
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0,5
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COMMENTS
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a(n) is the exponent of the greatest power of 3 not exceeding 2^n.
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LINKS
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FORMULA
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MATHEMATICA
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PROG
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(Haskell)
a136409 = floor . (* logBase 3 2) . fromIntegral
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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