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 A134848 #13 Aug 17 2020 01:56:38 %S A134848 4,5,6,8,9,10,11,13,14,14,17,18,19,21,21,23,24,26,27 %N A134848 Number of digits in A134847(n). %C A134848 a(26)=44 %H A134848 J. Browkin, <a href="https://web.archive.org/web/20071220044826/http://www.impan.gov.pl/Kryptologia/GROEB1.pdf">Groebner basis</a>. %Y A134848 Cf. A134843, A134844, A134845, A134846, A134847. %K A134848 nonn,base,more %O A134848 1,1 %A A134848 _Artur Jasinski_, Nov 13 2007 %E A134848 a(11)-a(15) from _Lars Blomberg_, Jun 25 2011