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%I #23 Dec 06 2019 17:56:03
%S 0,10,2011,303112,40512223,506152331415,60916253244516,
%T 70111826344654619,801519273747576171829,9019111283849586673849,
%U 100231122103104105106777889,1603011521231141151161079899,190411172143124135136117108129,210531202173154145146137118149,230631232203194175156157128159
%N a(n) contains the nonzero frequencies f(d) of digits d=0 .. 9 in all terms up to a(n-1) in concatenated form sorted with respect to d: f(0)//0//f(1)//1//...//f(9)//9. Initial term a(1)=0.
%C Zero; one zero; two zeros, one one; three zeros, three ones, one two; four zeros, five ones, two twos, two threes; five zeros, six ones, five twos, three threes, one four, one five; etc.
%C Also look left and say. - _Robert G. Wilson v_, Nov 18 2019
%H Robert G. Wilson v, <a href="/A177359/b177359.txt">Table of n, a(n) for n = 1..10000</a>
%t Nest[Append[#, FromDigits@ Flatten@ Map[IntegerDigits@ Reverse@ # &, Sort@ Tally@ Flatten@ IntegerDigits@ #]] &, {0}, 11] (* _Michael De Vlieger_, Nov 21 2019 *)
%Y Cf. A060857, A177360, A177361, A177362, A177363, A177364, A177365, A177366, A177367, A177368.
%K easy,nonn,base
%O 1,2
%A _Paolo P. Lava_, May 10 2010
%E More terms from _Robert G. Wilson v_, Nov 18 2019
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