This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A022504 #9 Jan 05 2018 22:02:13 %S A022504 8,81,8111,8113,811231,8112213111,811222113113,81122312311231, %T A022504 8112223111213112213111,81122331132111311222113113, %U A022504 811222321231211331122312311231 %N A022504 Describe the previous term! (method B - initial term is 8). %C A022504 Method B = 'digit'-indication followed by 'frequency'. %H A022504 Seiichi Manyama, <a href="/A022504/b022504.txt">Table of n, a(n) for n = 1..23</a> %e A022504 E.g. the term after 8113 is obtained by saying "8 once, 1 twice, 3 once", which gives 811231. %Y A022504 Cf. A007651, A022470, A022499, A022500-A022505. %K A022504 nonn,base,easy,nice %O A022504 1,1 %A A022504 _N. J. A. Sloane_