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 A022501 #14 Jan 05 2018 22:01:53 %S A022501 5,51,5111,5113,511231,5112213111,511222113113,51122312311231, %T A022501 5112223111213112213111,51122331132111311222113113, %U A022501 511222321231211331122312311231 %N A022501 Describe the previous term! (method B - initial term is 5). %C A022501 Method B = 'digit'-indication followed by 'frequency'. %H A022501 Seiichi Manyama, <a href="/A022501/b022501.txt">Table of n, a(n) for n = 1..23</a> %e A022501 E.g. the term after 5113 is obtained by saying "5 once, 1 twice, 3 once", which gives 511231. %Y A022501 Cf. A007651, A022470, A022499, A022500-A022505. %K A022501 nonn,base,easy,nice %O A022501 1,1 %A A022501 _N. J. A. Sloane_ %E A022501 Typo in data correct by _Peter J. C. Moses_, Jun 14 2013