login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A190132 Numbers 1 through 10000 sorted lexicographically in duodecimal representation (base 12). 7
1, 12, 144, 1728, 1729, 1730, 1731, 1732, 1733, 1734, 1735, 1736, 1737, 1738, 1739, 145, 1740, 1741, 1742, 1743, 1744, 1745, 1746, 1747, 1748, 1749, 1750, 1751, 146, 1752, 1753, 1754, 1755, 1756, 1757, 1758, 1759, 1760, 1761, 1762, 1763, 147, 1764, 1765 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
A190133 = inverse permutation: a(A190133(n)) = A190133(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, Duodecimal
Wikipedia, Duodecimal
EXAMPLE
a(13) = 1737 -> 1009 [doz];
a(14) = 1738 -> 100A [doz];
a(15) = 1739 -> 100B [doz];
a(16) = 145 -> 101 [doz];
a(17) = 1740 -> 1010 [doz];
a(18) = 1741 -> 1011 [doz];
largest term a(9026) = 10000 -> 5282 [doz];
last term a(10000) = 1727 -> BBB [doz], largest term lexicographically.
PROG
(Haskell)
import Data.Ord (comparing)
import Data.List (sortBy)
import Numeric (showIntAtBase)
import Data.Char (intToDigit)
a190132 n = a190132_list !! (n-1)
a190132_list =
sortBy (comparing (flip (showIntAtBase 12 intToDigit) "")) [1..10000]
CROSSREFS
Cf. A190126 (base 2), A190128 (base 3), A190130 (base 8), A190016 (base 10), A190134 (base 16).
Sequence in context: A370045 A264523 A171286 * A267791 A001021 A159490
KEYWORD
nonn,base,fini,full
AUTHOR
Reinhard Zumkeller, May 06 2011
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)