[seqfan] Re: Sharing no digit business

Paolo Lava ppl at spl.at
Fri Apr 3 10:04:37 CEST 2009


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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