

A247804


Numbers in decimal representation with distinct digits, such that in French their digits are in alphabetic order.


17



0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 21, 23, 24, 26, 27, 28, 29, 30, 31, 40, 41, 43, 46, 47, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 63, 70, 71, 73, 76, 80, 81, 83, 84, 86, 87, 89, 90, 91, 93, 94, 96, 97, 210, 230, 231, 240, 241, 243, 246, 247, 260, 261
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OFFSET

1,3


COMMENTS

List of decimal digits, alphabetically sorted by their names in French:
5 _ cinq, 2 _ deux, 8 _ huit, 9 _ neuf, 4 _ quatre, 7 _ sept, 6 _ six, 3 _ trois, 1 _ un, 0 _ zéro;
finite sequence with last and largest term a(1023) = 5289476310.


LINKS



PROG

(Haskell)
import Data.IntSet (fromList, deleteFindMin, union)
import qualified Data.IntSet as Set (null)
a247804 n = a247804_list !! (n1)
a247804_list = 0 : f (fromList [1..9]) where
f s  Set.null s = []
 otherwise = x : f (s' `union`
fromList (map (+ 10 * x) $ tail $ dropWhile (/= mod x 10) digs))
where (x, s') = deleteFindMin s
digs = [5, 2, 8, 9, 4, 7, 6, 3, 1, 0]


CROSSREFS

Cf. A247800 (Czech), A247801 (Danish), A247802 (Dutch), A053433 (English), A247803 (Finnish), A247805 (German), A247806 (Hungarian), A247807 (Italian), A247808 (Latin), A247809 (Norwegian), A247810 (Polish), A247807 (Portuguese), A247811 (Russian), A247812 (Slovak), A247813 (Spanish), A247809 (Swedish), A247814 (Turkish).


KEYWORD

nonn,base,word,fini,full


AUTHOR



STATUS

approved



