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A190128 Numbers 1 through 10000 sorted lexicographically in ternary representation. 8
1, 3, 9, 27, 81, 243, 729, 2187, 6561, 6562, 6563, 2188, 6564, 6565, 6566, 2189, 6567, 6568, 6569, 730, 2190, 6570, 6571, 6572, 2191, 6573, 6574, 6575, 2192, 6576, 6577, 6578, 731, 2193, 6579, 6580, 6581, 2194, 6582, 6583, 6584, 2195, 6585, 6586, 6587, 244 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
A190129 = inverse permutation: a(A190129(n)) = A190129(a(n)) = n;
a(n) <> n for n > 1.
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 (full sequence)
Eric Weisstein's World of Mathematics, Lexicographic Order
Eric Weisstein's World of Mathematics, Ternary
EXAMPLE
a(12) = 2188 -> 10000001 [tern];
a(13) = 6564 -> 100000010 [tern];
a(14) = 6565 -> 100000011 [tern];
a(15) = 6566 -> 100000012 [tern];
a(16) = 2189 -> 10000002 [tern];
a(17) = 6567 -> 100000020 [tern];
a(18) = 6568 -> 100000021 [tern];
a(19) = 6569 -> 100000022 [tern];
a(20) = 730 -> 1000001 [tern];
a(21) = 2190 -> 10000010 [tern];
largest term a(5164) = 10000 -> 111201101 [tern];
last term a(10000) = 6560 -> 22222222 [tern], largest term lexicographically.
PROG
(Haskell)
import Data.Ord (comparing)
import Data.List (sortBy)
a190128 n = a190128_list !! (n-1)
a190128_list = sortBy (comparing (show . a007089)) [1..10000]
CROSSREFS
Cf. A007089; A190126 (base 2), A190130 (base 8), A190016 (base 10), A190132 (base 12), A190134 (base 16).
Sequence in context: A249019 A216096 A300148 * A216097 A243845 A354269
KEYWORD
nonn,base,fini,full
AUTHOR
Reinhard Zumkeller, May 06 2011
STATUS
approved

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Last modified July 19 19:50 EDT 2024. Contains 374436 sequences. (Running on oeis4.)