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A180410 Unique digits used in n in numerical order 4
1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 1, 12, 13, 14, 15, 16, 17, 18, 19, 2, 12, 2, 23, 24, 25, 26, 27, 28, 29, 3, 13, 23, 3, 34, 35, 36, 37, 38, 39, 4, 14, 24, 34, 4, 45, 46, 47, 48, 49, 5, 15, 25, 35, 45, 5, 56, 57, 58, 59, 6, 16, 26, 36, 46, 56, 6, 67, 68, 69, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) = A227362(n) - A151949(n). - Reinhard Zumkeller, Jul 09 2013

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = 0123456789 after any digits not appearing in n are removed

EXAMPLE

a(93077) = 0379 = 379. Seven is only used once and the digits are sorted. The initial zero is not shown.

PROG

(Haskell)

import Data.List (nub, sort)

a180410 = read . sort . nub . show :: Integer -> Integer

-- Reinhard Zumkeller, Jul 09 2013

CROSSREFS

This is identical to A180409 with the zeros removed

Sequence in context: A326652 A222493 A032762 * A071650 A037265 A292685

Adjacent sequences:  A180407 A180408 A180409 * A180411 A180412 A180413

KEYWORD

easy,nonn,base,look

AUTHOR

Dominick Cancilla, Sep 02 2010

STATUS

approved

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Last modified November 17 11:02 EST 2019. Contains 329226 sequences. (Running on oeis4.)