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 A323421 Lexicographically earliest sequence of terms describing its successive chunks of different digits. 1

%I

%S 1,10,2,3,4,5,6,7,8,9,9,1,1,2,3,3,1,2,4,4,1,2,3,5,5,1,2,3,4,6,6,1,2,3,

%T 4,5,7,7,1,2,3,4,5,6,8,8,1,2,3,4,5,6,7,9,9,1,2,3,4,5,6,7,8,8,8,8,1,1,

%U 2,3,3,1,2,2,2,1,1,2,3,4,4,1,2,3,3,3,1,1,2,3,3,1,2,4,5,5,1,2,3,4,4,4,1,1,2,3,3,1,2

%N Lexicographically earliest sequence of terms describing its successive chunks of different digits.

%C Put a vertical stroke between two identical digits; those strokes delimitate a succession of chunks whose sizes are given by the sequence itself.

%C There is only one integer 10 in the sequence.

%C The other integers up to a(28445) are 1 (with 7940 copies), 2 (with 6904 copies), 3 (with 6157 copies), 4 (with 3706 copies), 5 (with 2091 copies), 6 (with 1065 copies), 7 (with 445 copies), 8 (with 123 copies) and 9 (with only 14 copies).

%H Jean-Marc Falcoz, <a href="/A323421/b323421.txt">Table of n, a(n) for n = 1..28446</a>

%e The stroke technique transforms the sequence into 1 | 10,2,3,4,5,6,7,8,9 | 9,1 | 1,2,3 | 3,1,2,4 |... and we see indeed that the chunks of different digits have sizes 1, 10, 2, 3, 4, ...

%K nonn,base

%O 1,2

%A _Eric Angelini_ and _Jean-Marc Falcoz_, Jan 14 2019

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Last modified January 17 14:19 EST 2022. Contains 350400 sequences. (Running on oeis4.)