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%I #11 Feb 20 2021 13:31:34
%S 1,10,100,101,102,20,103,104,105,11,106,120,2,200,107,108,30,13,109,
%T 40,14,110,50,15,12,16,130,60,61,21,201,202,22,203,70,140,150,170,17,
%U 160,80,38,230,180,31,113,190,90,49,204,210,41,114,18,301,205,250,310
%N Lexicographically earliest sequence of distinct terms > 0 such that the n-th digit of the sequence is shared by a(n) and a(n+1).
%H Carole Dubois, <a href="/A341692/b341692.txt">Table of n, a(n) for n = 1..8975</a>
%e a(2) = 10 since 10 is the smallest positive number not yet in the sequence that shares the 2nd digit of the sequence (i.e., 1) with a(3) = 100;
%e a(6) = 20 since 20 is the smallest positive number not yet in the sequence that shares the 6th digit of the sequence (i.e., 0) with a(7) = 103. Etc.
%Y Cf. A323708.
%K base,nonn,look
%O 1,2
%A _Eric Angelini_ and _Carole Dubois_, Feb 17 2021
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