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 A048324 #6 Oct 13 2019 16:36:37 %S A048324 0,1,2,3,4,5,6,7,8,9,10,11,12,14,28,42,56,70,84,98,112,126,140,154, %T A048324 168,182,183,184,185,186,187,188,189,190,191,192,193,194,364,365,366, %U A048324 367,368,369,370,371,372,373,374,375,376,546,547,548,549,550,551,552,553 %N A048324 Numbers whose base-13 expansions, read from left to right, have run lengths that strictly decrease. %Y A048324 Cf. A037013, A043702, A043716, A044824, A044962. %K A048324 nonn,base %O A048324 0,3 %A A048324 _Patrick De Geest_, Feb 15 1999