[seqfan] Re: Sharing no digit business

Jacques Tramu jacques.tramu at echolalie.com
Fri Apr 3 21:22:01 CEST 2009


The first 200 terms I found were :  (same as Farideh I think) :

a[24] = 25

2,1,4,3,6,5,8,7,10,9,12,30,14,20,16,22,18,23,21,31,33,34,40,25,36,
27,35,29,37,41,42,38,44,50,46,45,48,47,43,51,52,53,55,56,60,57,58,59,54,61,
62,63,64,66,67,70,68,69,71,72,73,74,75,77,76,78,80,79,81,82,83,84,85,86,88,
89,90,91,100,92,93,94,95,96,97,99,98,101,102,111,200,103,104,105,106,107,108,110,112,222,
223,333,224,225,226,227,228,229,113,232,202,300,204,115,203,117,205,119,206,121,303,123,400,125,304,
127,305,129,306,131,207,133,208,135,209,137,220,139,240,141,230,143,250,145,233,147,235,149,236,151,
234,153,242,155,237,157,238,159,243,161,239,163,244,165,247,167,245,169,248,171,246,173,249,175,260,
177,252,179,253,181,254,183,255,185,262,187,256,189,257,191,258,193,264,195,263,197,265,199,266,311,
210,313,411,315,314,317,316,319,318,334,212,307,214,308,216,309,218,330,221,331,335,301,401,310,336,
337,338,339,340,414,241,404,405,500,406,407,408,409,410,351,350,353,501,355,360,357,356,359,358,341,

Regards to everybody
Jacques.



f.firoozbakht at sci.ui.ac.ir a écrit :
> Hello Paolo,
>
>   
>> Up to n=100 (any errors?):
>> 2,1,4,3,6,5,8,7,10,9,12,30,14,20,16,22,18,23,21,31,33,34,40,32,
>>     
>
> It seems that a(24)=25 you wrote 32. Am I right?
>
> The first 100 terms that you found are:
>
>      2,1,4,3,6,5,8,7,10,9,12,30,14,20,16,22,18,23,21,31,33,34,40,32,
>      26,35,28,36,37,29,42,44,41,50,46,45,48,39,47,51,52,53,49,55,60,
>      57,56,59,58,61,62,63,64,65,66,70,68,67,71,72,73,74,75,77,78,79,
>      80,90,76,81,82,83,84,85,86,88,89,91,100,92,93,94,95,96,97,99,98,
>      101,102,111,200,103,104,105,106,107,108,110,112,222
>
> and the first 100 terms that I found are:
>
>      2,1,4,3,6,5,8,7,10,9,12,30,14,20,16,22,18,23,21,31,33,34,40,25,
>      36,27,35,29,37,41,42,38,44,50,46,45,48,47,43,51,52,53,55,56,60,
>      57,58,59,54,61,62,63,64,66,67,70,68,69,71,72,73,74,75,77,76,78,
>      80,79,81,82,83,84,85,86,88,89,90,91,100,92,93,94,95,96,97,99,
>      98,101,102,111,200,103,104,105,106,107,108,110,112,222
>
>
> Best wishes,
> Farideh
>
>
> Quoting Paolo Lava <ppl at spl.at>:
>
>   
>> Hello Eric,
>>
>> Up to n=100 (any errors?):
>>
>> 2,1,4,3,6,5,8,7,10,9,12,30,14,20,16,22,18,23,21,31,33,34,40,32,
>> 26,35,28,36,37,29,42,44,41,50,46,45,48,39,47,51,52,53,49,55,60,
>> 57,56,59,58,61,62,63,64,65,66,70,68,67,71,72,73,74,75,77,78,79,
>> 80,90,76,81,82,83,84,85,86,88,89,91,100,92,93,94,95,96,97,99,98,
>> 101,102,111,200,103,104,105,106,107,108,110,112,222
>>
>> Terms not present so far: 11,13,15,17,19,24,25,27,38,43,54,69,87.....
>>
>> Best regards
>>
>> Paolo
>>
>> --- Eric.Angelini at kntv.be wrote:
>>
>> From: "Eric Angelini" <Eric.Angelini at kntv.be>
>> To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
>> Subject: [seqfan]  Sharing no digit business
>> Date: Thu, 2 Apr 2009 18:34:52 +0200
>>
>>
>> Hello SeqFans,
>> I'm still in the "Sharing no digit" business... Could
>> someone please check this seq:
>>
>> "a(n) shares no digit with the a(n)th term of the sequence"
>>
>> a(1)=2 -- and to extend the seq, always add the smallest
>>           integer not used so far.
>>
>> S = 2,1,4,3,6,5,8,7,10,9,12,30,14,20,16,22,18,23,21,31,33,34,...
>>
>> (a nightmare to do by hand)
>>
>> Best,
>> E.
>>
>> (terms *not* in S are also of interest: 11,13,15,17,19,...)
>>
>> _______________________________________________
>>
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