Rich wrote:

I'm puzzled about this. What are we supposed to do about including 00,01,...? The digrams occur in the concatenation of the terms in the sequence, so 00 occurs in 100 and 01 in 100122.

And why can't the sequence below be improved by replacing 188 with 18 and 88?

Then 1888 has two copies of 88 [1(88)8 and 18(88)], which is not allowed.

Rich

-----Original Message----- From: math-fun-bounces+rschroe=sandia.gov@mailman.xmission.com

[mailto:math-fun-bounces+rschroe=sandia.gov@mailman.xmissi

on.com] On Behalf Of Eric Angelini Sent: Wednesday, February 16, 2005 11:52 AM To: math-fun; seqfan@ext.jussieu.fr Subject: [math-fun] 100 Digrams -- 3059

Still better, by Geoff Bailey (original post is on rec.puzzles). Best, É. -------------------------------

8 19 20 23 24 25 26 27 28 29 30 34 35 36 37 38 39 40 45 46 47 48 49 50 56 57 58 59 60 67 68 69 70 78 79 80 89 90 91 100 122 133 144 155 166 177 188

Total 3059

Cheers, Geoff. ---------------------------------------------------------- ---------- Geoff Bailey (Fred the Wonder Worm) | Programmer by trade -- ftww@maths.usyd.edu.au | Gameplayer by vocation. ---------------------------------------------------------- ----------

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