login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A171491 Natural numbers not divisible by their number of decimal digits. 2
11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 100, 101, 103, 104, 106, 107, 109, 110, 112, 113, 115, 116, 118, 119, 121, 122, 124, 125 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A098952.

Asymptotic density 1. [Charles R Greathouse IV, Nov 13 2010]

LINKS

Table of n, a(n) for n=1..63.

EXAMPLE

100 has three digits and is not divisible by 3, therefore 100 is in the sequence.

MATHEMATICA

Select[Range[150], !Divisible[#, IntegerLength[#]]&]  (* Harvey P. Dale, Apr 24 2011 *)

PROG

(MAGMA) [n: n in [1..140] | not IsIntegral(n/#Intseq(n))]; // Bruno Berselli, Feb 09 2016

CROSSREFS

Sequence in context: A048596 A228709 A292513 * A277268 A152200 A277694

Adjacent sequences:  A171488 A171489 A171490 * A171492 A171493 A171494

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Dec 10 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 4 21:43 EDT 2020. Contains 333238 sequences. (Running on oeis4.)