%I
%S 1,2,11,12,21,22,31,32,101,1001,1002,1011,1012,1021,1022,10001,100001,
%T 100002,100011,100012,100021,100022,1000001,10000001,10000002,
%U 10000011,10000012,10000021,10000022,10000031,10000032,10000101,10001001
%N Lexicographically earliest strictly increasing base 7 autovarious sequence: a(n) = number of distinct a(k) mod 7^n (written in base 7).
%C The first a(n) elements include all a(n) residues mod 7^n.
%K nonn,base
%O 0,2
%A _David W. Wilson_
