[seqfan] Re: Digit chaos in a window

[David Scambler]

If I understand it correctly, after a(24) = 8, a(25) should be 10 not 6?

If so, starting from a(47) = 5 the following pattern repeats ad. inf. 5 4 3 2 10 9 8 7 6

dave

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Message: 9
Date: Wed, 18 Aug 2010 19:50:00 +0200
From: "Eric Angelini" <Eric.Angelini at kntv.be>
Subject: [seqfan]  Digit chaos in a window
To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
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	<F05775148D000C4B9321A5113D53CB7D01C3703C at KNTV-SERVER01.kntv.local>
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Hello SeqFans,
a(n) is the size of the largest possible window which includes a(n) itself and
a(n) non-repeated digits (the "window" is under the stroke "|"):

S = 1 2 3 4 5 6 7 8 9 10 6 5 7 4 8 3 9 6 5 7 4 3 2 8 6 5 7 4 3 2 6 5 4 3 2 1 7 8 9 6 ...
    | | | | | | | | |  | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 
    1 1 1 1 1 1 1 1 1  2 7 9 8 6 9 4 1 7 8 4 6 7 3 9 7 3 4 6 7 3 5 4 2 5 3 1 6 6 6 2 
      2 2 2 2 2 2 2 2  3 8 1 9 5 1 8 0 4 3 8 5 4 2 6 4 2 3 5 4 2 7 3 6 4 2   5 5 5 1 
        3 3 3 3 3 3 3  4 9 0 1 7 0 3 6 8 9 3 7 3   5 3 8 2 7 3   4 2 5 3     4 4 4 7 
          4 4 4 4 4 4  5 1 6 0 4 6   5 3 6 9 4     7 2 6 8 4     3 6 4       3 3 3 8 
            5 5 5 5 5  6 0 5 6   5   7 9 5 6       4 8 5 6       2 5         2 2 2 9 
              6 6 6 6  7 6   5   7   4 6   5       3 6   5       6           1 1 1 6 
                7 7 7  8     7   4   8     7       2     7                   7 7 7   
                  8 8  9         8   3             8                           8 8   
                    9  1             9                                           9   
                       0                                                             

Unless I've made errors in computing this, I don't see any pattern yet: when will it
arise?!

Best,
?.