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 A039610 #12 Jul 01 2021 02:52:04 %S A039610 20,97,152,176,188,200,212,224,236,240,242,243,244,245,246,247,249, %T A039610 250,251,260,272,284,308,385,452,529,596,673,740,817,884,961,1028, %U A039610 1105,1153,1164,1166,1167,1168,1169,1170,1171,1173,1174,1175,1177 %N A039610 Numbers whose base-12 representation has the same nonzero number of 1's and 8's. %t A039610 Select[Range[1200],DigitCount[#,12,1]==DigitCount[#,12,8]>0&] (* _Harvey P. Dale_, Mar 05 2014 *) %K A039610 nonn,base,easy %O A039610 1,1 %A A039610 _Olivier Gérard_