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 A247807 Numbers in decimal representation with distinct digits, such that in Italian and Portuguese 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, 67, 70, 71, 73, 80, 81, 83, 84, 86, 87, 90, 91, 93, 94, 96, 97, 98, 210, 230, 231, 240, 241, 243, 246, 247, 260, 261 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS List of decimal digits, alphabetically sorted by their names in Italian resp. Portuguese:  5 _ cinque _ cinco, 2 _ due _ dois/duas, 9 _ nove _ nove, 8 _ otto _ oito, 4 _ quattro _ quatro, 6 _ sei _ seis, 7 _ sette _ sete, 3 _ tre _ tres, 1 _ uno _ um, 0 _ zero _ zero; finite sequence with last and largest term a(1023) = 5298467310. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..1023 Wikipedia, Zahlen in unterschiedlichen Sprachen Wikipedia, List of numbers in various languages PROG (Haskell) import Data.IntSet (fromList, deleteFindMin, union) import qualified Data.IntSet as Set (null) a247807 n = a247807_list !! (n-1) a247807_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, 9, 8, 4, 6, 7, 3, 1, 0] CROSSREFS Intersection of A010784 and A247757. Cf. A247800 (Czech), A247801 (Danish), A247802 (Dutch), A053433 (English), A247803 (Finnish), A247804 (French), A247805 (German), A247806 (Hungarian), A247808 (Latin), A247809 (Norwegian), A247810 (Polish), A247811 (Russian), A247812 (Slovak), A247813 (Spanish), A247809 (Swedish), A247814 (Turkish). Sequence in context: A247143 A257128 A247808 * A247804 A032865 A032889 Adjacent sequences:  A247804 A247805 A247806 * A247808 A247809 A247810 KEYWORD nonn,base,word,fini,full AUTHOR Reinhard Zumkeller, Oct 05 2014 STATUS approved

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Last modified April 10 01:57 EDT 2020. Contains 333392 sequences. (Running on oeis4.)