OFFSET
1,3
COMMENTS
List of decimal digits, alphabetically sorted by their names in Spanish:
0 _ cero, 5 _ cinco, 4 _ cuatro, 2 _ dos, 9 _ nueve, 8 _ ocho, 6 _ seis, 7 _ siete, 3 _ tres, 1 _ uno/una. - Reinhard Zumkeller, Oct 05 2014
a(36233) = A247813(512) = 542986731 is the greatest term not containing any repeating digits. - Reinhard Zumkeller, Oct 05 2014
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
Wikipedia, Zahlen in unterschiedlichen Sprachen
Wikipedia, List of numbers in various languages
PROG
(Perl) sub isA161390 {
shift =~ m/^(0|5*4*2*9*8*6*7*3*1*)$/
}
(Haskell)
import Data.IntSet (fromList, deleteFindMin, union)
a161390 n = a161390_list !! (n-1)
a161390_list = 0 : f (fromList [1..9]) where
f s = x : f (s' `union`
fromList (map (+ 10 * x) $ dropWhile (/= mod x 10) digs))
where (x, s') = deleteFindMin s
digs = [0, 5, 4, 2, 9, 8, 6, 7, 3, 1]
-- Reinhard Zumkeller, Oct 18 2014
CROSSREFS
Cf. A247813 (subsequence).
Cf. A247750 (Czech), A247751 (Danish), A247752 (Dutch), A053432 (English), A247753 (Finnish), A247754 (French), A247755 (German), A247756 (Hungarian), A247757 (Italian), A247758 (Latin), A247759 (Norwegian), A247760 (Polish), A247757 (Portuguese), A247761 (Russian), A247762 (Slovak), A247759 (Swedish), A247764 (Turkish).
KEYWORD
nonn,word,base
AUTHOR
Claudio Meller, Jun 08 2009
STATUS
approved