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At each step, record how many 1's, 2's, etc. have been seen so far in the sequence.
(Formerly M2126)
3

%I M2126 #17 Oct 08 2022 14:15:50

%S 1,1,2,21,32,331,433,4351,53621,647221,7673221,8883233,891132333,

%T 8101532334101,101118423351110001,141220533351220001001,

%U 17142355335122101100101,23162558335122102101101001,30192751033612210211110100201,3823295114361321021111110020101001

%N At each step, record how many 1's, 2's, etc. have been seen so far in the sequence.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%Y A333867 is the tabular version of this sequence.

%K nonn,base

%O 1,3

%A _N. J. A. Sloane_, _James Propp_

%E More terms from _Franklin T. Adams-Watters_, Dec 14 2006