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A190134
Numbers 1 through 10000 sorted lexicographically in hexadecimal representation (base 16).
7
1, 16, 256, 4096, 4097, 4098, 4099, 4100, 4101, 4102, 4103, 4104, 4105, 4106, 4107, 4108, 4109, 4110, 4111, 257, 4112, 4113, 4114, 4115, 4116, 4117, 4118, 4119, 4120, 4121, 4122, 4123, 4124, 4125, 4126, 4127, 258, 4128, 4129, 4130, 4131, 4132, 4133, 4134
OFFSET
1,2
COMMENTS
A190135 = inverse permutation: a(A190135(n)) = A190135(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, Hexadecimal.
Wikipedia, Hexadecimal.
EXAMPLE
a(17) = 4109 -> 100D [hex];
a(18) = 4110 -> 100E [hex];
a(19) = 4111 -> 100F [hex];
a(20) = 257 -> 101 [hex];
a(21) = 4112 -> 1010 [hex];
a(22) = 4113 -> 1011 [hex];
largest term a(6301) = 10000 -> 2710 [hex];
last term a(10000) = 4095 -> FFF [hex], largest term lexicographically.
PROG
(Haskell)
import Data.Ord (comparing)
import Data.List (sortBy)
import Numeric (showHex)
a190134 n = a190134_list !! (n-1)
a190134_list = sortBy (comparing (flip showHex "")) [1..10000]
CROSSREFS
Cf. A190126 (base 2), A190128 (base 3), A190130 (base 8), A190016 (base 10), A190132 (base 12).
Sequence in context: A220107 A171290 A136577 * A267792 A220252 A267976
KEYWORD
nonn,base,fini,full
AUTHOR
Reinhard Zumkeller, May 06 2011
STATUS
approved