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 A103320 #6 Aug 25 2025 13:42:15 %S A103320 1,22,33,444,555,6666,7777,8888,99999 %N A103320 Condensed Golomb sequence: digits according to Golomb's sequence, same digits concatenated. %C A103320 a(4) = 444 because Golomb's sequence has three terms a(n)=4. As the sequence handles with digits, next term a(10)=1010101010 adds 5 digits "1", which is excluded because < a(1)=1 > states there is only one digit "1". Therefore a(10) and next terms are impossible and the sequence is finite. %Y A103320 Cf. A001462. %K A103320 base,easy,nonn,fini,full,changed %O A103320 1,2 %A A103320 _Alexandre Wajnberg_, Apr 02 2005