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 A048308 #6 Oct 13 2019 16:40:49 %S A048308 0,1,2,3,4,5,6,7,8,9,10,12,24,36,48,60,72,84,96,108,120,121,133,145, %T A048308 157,169,181,193,205,217,229,241,242,254,266,278,290,302,314,326,338, %U A048308 350,362,363,375,387,399,411,423,435,447,459,471,483,484,496,508,520 %N A048308 Numbers whose base-11 expansions, read from left to right, have run lengths that strictly increase. %Y A048308 Cf. A037015, A043700, A043714, A044822, A044960. %K A048308 nonn,base %O A048308 0,3 %A A048308 _Patrick De Geest_, Feb 15 1999