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A038365 Numbers n with property that digits of n are not present in 2n. 4
1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 14, 15, 16, 17, 18, 19, 22, 23, 27, 28, 29, 31, 32, 33, 34, 35, 36, 38, 39, 41, 43, 44, 45, 46, 48, 52, 53, 54, 55, 56, 57, 58, 59, 64, 65, 66, 67, 69, 72, 73, 76, 77, 78, 79, 82, 83, 85, 86, 88, 92, 93, 94, 111, 113, 114, 115, 116, 117, 118 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

207 is the smallest number containing a zero, cf. A192825. [Reinhard Zumkeller, Aug 09 2011]

LINKS

T. D. Noe, Table of n, a(n) for n=1..2000

EXAMPLE

36 is in the list since 2*36=72, which shares no digit with 36.

MATHEMATICA

Select[Range[140], Intersection[IntegerDigits[2 #], IntegerDigits[#]] =={}&]  (* Harvey P. Dale, Apr 30 2011 *)

PROG

(Haskell)

import Data.List (intersect)

a038365 n = a038365_list !! (n-1)

a038365_list = filter (\x -> null (show (2*x) `intersect` show x)) [1..]

-- Reinhard Zumkeller, Aug 09 2011

CROSSREFS

Cf. A129845 (complement).

Sequence in context: A106000 A267215 A039219 * A247761 A031185 A129562

Adjacent sequences:  A038362 A038363 A038364 * A038366 A038367 A038368

KEYWORD

nonn,easy,base,nice

AUTHOR

Erich Friedman

STATUS

approved

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Last modified November 15 01:07 EST 2019. Contains 329142 sequences. (Running on oeis4.)