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!)
A247800 Numbers in decimal representation with distinct digits, such that in Czech their digits are in alphabetic order. 17

%I #6 Jan 30 2016 18:33:29

%S 0,1,2,3,4,5,6,7,8,9,10,13,15,16,17,18,20,21,23,25,26,27,28,40,41,42,

%T 43,45,46,47,48,49,53,56,57,63,73,76,83,85,86,87,90,91,92,93,95,96,97,

%U 98,103,105,106,107,108,153,156,157,163,173,176,183,185,186

%N Numbers in decimal representation with distinct digits, such that in Czech their digits are in alphabetic order.

%C List of decimal digits, alphabetically sorted by their names in Czech:

%C 4 _ čtyři, 9 _ devět, 2 _ dva/dvě, 1 _ jeden/jedna/jedno, 0 _ nula, 8 _ osm, 5 _ pět, 7 _ sedm, 6 _ šest, 3 _ tři;

%C finite sequence with last and largest term a(992) = 4921085673.

%H Reinhard Zumkeller, <a href="/A247800/b247800.txt">Table of n, a(n) for n = 1..992</a>

%H Wikipedia, <a href="http://de.wikipedia.org/wiki/Zahlen_in_unterschiedlichen_Sprachen#0_bis_10">Zahlen in unterschiedlichen Sprachen</a>

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/List_of_numbers_in_various_languages">List of numbers in various languages</a>

%o (Haskell)

%o import Data.IntSet (fromList, deleteFindMin, union)

%o import qualified Data.IntSet as Set (null)

%o a247800 n = a247800_list !! (n-1)

%o a247800_list = 0 : f (fromList [1..9]) where

%o f s | Set.null s = []

%o | otherwise = x : f (s' `union`

%o fromList (map (+ 10 * x) $ tail $ dropWhile (/= mod x 10) digs))

%o where (x, s') = deleteFindMin s

%o digs = [4, 9, 2, 1, 0, 8, 5, 7, 6, 3]

%Y Intersection of A010784 and A247750.

%Y Cf. A247801 (Danish), A247802 (Dutch), A053433 (English), A247803 (Finnish), A247804 (French), A247805 (German), A247806 (Hungarian), A247807 (Italian), A247808 (Latin), A247809 (Norwegian), A247810 (Polish), A247807 (Portuguese), A247811 (Russian), A247812 (Slovak), A247813 (Spanish), A247809 (Swedish), A247814 (Turkish).

%K nonn,base,word,fini,full

%O 1,3

%A _Reinhard Zumkeller_, Oct 05 2014

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 August 4 15:21 EDT 2024. Contains 374923 sequences. (Running on oeis4.)