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%I #4 May 01 2021 06:50:28
%S 1,11,13,1431,143111413111,14311141311241311341113113,
%T 14311141311241311341113114413113411131122141113112314113311231
%N Describe all the previous terms (previous terms are concatenated into one large integer; method - digit-indication followed by frequency, initial term is 1).
%C The next term is too large to include.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/LookandSaySequence.html">Look and Say Sequence</a>
%e a(4) is obtained by saying "1 four times, 3 once", which gives 1431.
%Y Cf. A005150, A007651, A045981, A045982, A060857, A343837.
%K nonn,base,easy
%O 1,2
%A _Ilya Gutkovskiy_, May 01 2021
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