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 A247750 Numbers in decimal representation, such that in Czech their digits are in alphabetic order. 17
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 16, 17, 18, 20, 21, 22, 23, 25, 26, 27, 28, 33, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 53, 55, 56, 57, 63, 66, 73, 76, 77, 83, 85, 86, 87, 88, 90, 91, 92, 93, 95, 96, 97, 98, 99, 100, 103, 105, 106, 107, 108 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS List of decimal digits, alphabetically sorted by their names in Czech: 4 _ čtyři, 9 _ devět, 2 _ dva/dvě, 1 _ jeden/jedna/jedno, 0 _ nula, 8 _ osm, 5 _ pět, 7 _ sedm, 6 _ šest, 3 _ tři; a(144740) = A247800(992) = 4921085763 is the greatest term not containing any repeating digits. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 PROG (Haskell) import Data.IntSet (fromList, deleteFindMin, union) a247750 n = a247750_list !! (n-1) a247750_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 = [4, 9, 2, 1, 0, 8, 5, 7, 6, 3] CROSSREFS Cf. A247800 (subsequence). Cf. 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), A161390 (Spanish), A247759 (Swedish), A247764 (Turkish). Sequence in context: A178156 A177054 A247760 * A051534 A032961 A033063 Adjacent sequences:  A247747 A247748 A247749 * A247751 A247752 A247753 KEYWORD nonn,base,word AUTHOR Reinhard Zumkeller, Oct 05 2014 STATUS approved

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Last modified March 23 07:05 EDT 2019. Contains 321422 sequences. (Running on oeis4.)