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A102488 Numbers in base-12 representation that cannot be written with decimal digits. 5
10, 11, 22, 23, 34, 35, 46, 47, 58, 59, 70, 71, 82, 83, 94, 95, 106, 107, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 154, 155, 166, 167, 178, 179, 190, 191, 202, 203, 214 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

Eric Weisstein's World of Mathematics, Duodecimal

Wikipedia, Duodecimal

EXAMPLE

143 = 11*12^1 + 11*12^0 = 'BB', therefore 143 is a term.

PROG

(Haskell)

import Data.List (unfoldr)

a102488 n = a102488_list !! (n-1)

a102488_list = filter (any (> 9) . unfoldr (\x ->

   if x == 0 then Nothing else Just $ swap $ divMod x 12)) [1..]

-- Reinhard Zumkeller, Apr 18 2011

CROSSREFS

Complement of A102487; A102490, A102492, A102494.

Sequence in context: A041200 A041847 A113702 * A022315 A061590 A173900

Adjacent sequences:  A102485 A102486 A102487 * A102489 A102490 A102491

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Jan 12 2005

STATUS

approved

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Last modified May 28 10:49 EDT 2020. Contains 334681 sequences. (Running on oeis4.)