A161390 Numbers with digits in alphabetical order (in Spanish).

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 21, 22, 23, 26, 27, 28, 29, 31, 33, 41, 42, 43, 44, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 63, 66, 67, 71, 73, 77, 81, 83, 86, 87, 88, 91, 93, 96, 97, 98, 99, 111, 211

Offset: 1

Author

Claudio Meller, Jun 08 2009

Keywords

• nonn
• word
• base

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

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).

Programs

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

Perl

sub isA161390 {
  shift =~ m/^(0|5*4*2*9*8*6*7*3*1*)$/
}