A247813 Numbers in decimal representation with distinct digits, such that in Spanish their digits are in alphabetic order.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 21, 23, 26, 27, 28, 29, 31, 41, 42, 43, 46, 47, 48, 49, 51, 52, 53, 54, 56, 57, 58, 59, 61, 63, 67, 71, 73, 81, 83, 86, 87, 91, 93, 96, 97, 98, 231, 261, 263, 267, 271, 273, 281, 283, 286, 287, 291, 293, 296, 297, 298, 421, 423

Offset: 1

Author

Reinhard Zumkeller, Oct 05 2014

Keywords

• nonn
• base
• word
• fini
• full

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;

finite sequence with last and largest term a(512) = 542986731.

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..512
• Wikipedia, Zahlen in unterschiedlichen Sprachen
• Wikipedia, List of numbers in various languages

Crossrefs

Intersection of A010784 and A161390 .

Cf. A247800 (Czech), 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), A247809 (Swedish), A247814 (Turkish).

Programs

Haskell

import Data.IntSet (fromList, deleteFindMin, union)
import qualified Data.IntSet as Set (null)
a247813 n = a247813_list !! (n-1)
a247813_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 = [0, 5, 4, 2, 9, 8, 6, 7, 3, 1]