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 A083152 #11 Sep 25 2019 10:43:42 %S A083152 101,11,91,9901,11,911,108949,99009901,948230256347,10000000000000001 %N A083152 a(n) = A083151(n+1)/A083151(n). %Y A083152 Cf. A083151. %K A083152 nonn,base,more %O A083152 1,1 %A A083152 _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003 %E A083152 More terms from _Patrick De Geest_, Jun 05 2003 %E A083152 Terms a(4)-a(8) corrected by _Giovanni Resta_, Sep 22 2019 %E A083152 a(9) from _David A. Corneth_, Sep 22 2019 %E A083152 a(10) from _Giovanni Resta_, Sep 25 2019