[seqfan] Re: n and 2n have a digit in common

Eric Angelini Eric.Angelini at kntv.be
Wed Apr 16 15:03:30 CEST 2014


Thanks, Giovanni!
Best,
É.

Catapulté de mon aPhone

> Le 16 avr. 2014 à 14:41, "Giovanni Resta" <g.resta at iit.cnr.it> a écrit :
> 
>> On 04/16/2014 01:59 PM, Eric Angelini wrote:
>> 
>> Hello SeqFans,
>> not sure this is in the OEIS:
>> S=10,12,20,21,24,30,37, 40,42,49,50,51,...
>> 
>> Integers sharing at least one
>> digit with their double.
> 
> Yes, it is your sequence A129845.
> 
> The others in OEIS are
> 3x = A129846
> 4x = A129848
> 
> Giovanni
> 
> 
> 
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