A180410 Unique digits used in n in numerical order.

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

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.

Maple

a:= n-> parse(cat(sort([{convert(n, base, 10)[]}[]])[])):
seq(a(n), n=1..70);  # Alois P. Heinz, Sep 21 2022

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: A222493 A032762 A371535 * A071650 A037265 A292685

Adjacent sequences: A180407 A180408 A180409 * A180411 A180412 A180413

Keyword

easy,nonn,base,look

Author

Dominick Cancilla, Sep 02 2010

Status

approved