

A247760


Numbers in decimal representation, such that in Polish 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, 29, 30, 33, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 53, 55, 56, 57, 60, 63, 66, 67, 70, 73, 77, 80, 83, 85, 86, 87, 88, 90, 91, 93, 95, 96, 97, 98, 99, 100, 110
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OFFSET

1,3


COMMENTS

List of decimal digits, alphabetically sorted by their names in Polish:
4 _ cztery, 2 _ dwa/dwie, 9 _ dziewięć, 1 _ jeden/jedna/jedno, 8 _ osiem, 5 _ pięć, 6 _ sześć, 7 _ siedem, 3 _ trzy, 0 _ zero;
a(1134871) = A247810(1023) = 4291856730 is the greatest term not containing any repeating digits.


LINKS



PROG

(Haskell)
import Data.IntSet (fromList, deleteFindMin, union)
a247760 n = a247760_list !! (n1)
a247760_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, 2, 9, 1, 8, 5, 6, 7, 3, 0]


CROSSREFS

Cf. A247750 (Czech), A247751 (Danish), A247752 (Dutch), A053432 (English), A247753 (Finnish), A247754 (French), A247755 (German), A247756 (Hungarian), A247757 (Italian), A247758 (Latin), A247759 (Norwegian), A247757 (Portuguese), A247761 (Russian), A247762 (Slovak), A161390 (Spanish), A247759 (Swedish), A247764 (Turkish).


KEYWORD

nonn,base,word


AUTHOR



STATUS

approved



