Search: id:A006920
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%I A006920 M2126
%S A006920 1,1,2,21,32,331,433,4351,53621,647221,7673221,8883233,891132333,
%T A006920 8101532334101,101118423351110001,141220533351220001001,
%U A006920 17142355335122101100101,23162558335122102101101001,30192751033612210211110100201,
               3823295114361321021111110020101001
%N A006920 At each step, record how many 1's, 2's, etc. have been seen so far in 
               the sequence.
%D A006920 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%Y A006920 A030717 is the tabular version of this sequence.
%Y A006920 Sequence in context: A075715 A071761 A101316 this_sequence A089558 A041049 
               A005484
%Y A006920 Adjacent sequences: A006917 A006918 A006919 this_sequence A006921 A006922 
               A006923
%K A006920 nonn,base
%O A006920 1,3
%A A006920 N. J. A. Sloane (njas(AT)research.att.com), Jim Propp (propp(AT)math.wisc.edu)
%E A006920 More terms from Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), 
               Dec 14 2006

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