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A319651
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Largest number having in its ternary representation the same number of 0's, 1's and 2's as n.
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9
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0, 1, 2, 3, 4, 7, 6, 7, 8, 9, 12, 21, 12, 13, 22, 21, 22, 25, 18, 21, 24, 21, 22, 25, 24, 25, 26, 27, 36, 63, 36, 39, 66, 63, 66, 75, 36, 39, 66, 39, 40, 67, 66, 67, 76, 63, 66, 75, 66, 67, 76, 75, 76, 79, 54, 63, 72, 63, 66, 75, 72, 75, 78, 63, 66, 75, 66, 67, 76, 75, 76
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OFFSET
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0,3
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LINKS
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PROG
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(Ruby)
def A(k, n)
(0..n).map{|i| i.to_s(k).split('').sort.reverse.join.to_i(k)}
end
p A(3, 100)
(PARI) a(n) = fromdigits(vecsort(digits(n, 3), , 4), 3); \\ Michel Marcus, Sep 25 2018
(Python)
from gmpy2 import digits
return int(''.join(sorted(digits(n, 3), reverse=True)), 3) # Chai Wah Wu, Sep 26 2018
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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