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 A033028 #12 Aug 14 2021 18:53:16 %S A033028 16,32,48,64,80,96,112,128,144,160,176,192,208,224,241,482,723,964, %T A033028 1205,1446,1687,1928,2169,2410,2651,2892,3133,3374,3600,3616,3632, %U A033028 3648,3664,3680,3696,3712,3728,3744,3760,3776,3792,3808 %N A033028 Numbers whose base-15 expansion has no run of digits with length < 2. %H A033028 Vincenzo Librandi, <a href="/A033028/b033028.txt">Table of n, a(n) for n = 1..1100</a> %t A033028 Select[Range[4000],Min[Length/@Split[IntegerDigits[#,15]]]>1&] (* _Harvey P. Dale_, Sep 13 2013 *) %K A033028 nonn,base %O A033028 1,1 %A A033028 _Clark Kimberling_