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 A043523 #17 May 25 2023 18:07:14 %S A043523 888,1888,2888,3888,4888,5888,6888,7888,8088,8188,8288,8388,8488,8588, %T A043523 8688,8788,8808,8818,8828,8838,8848,8858,8868,8878,8880,8881,8882, %U A043523 8883,8884,8885,8886,8887,8889,8898,8988,9888,10888 %N A043523 Numbers having three 8's in base 10. %H A043523 Daniel Starodubtsev, <a href="/A043523/b043523.txt">Table of n, a(n) for n = 1..10000</a> %t A043523 Select[Range[11000],DigitCount[#,10,8]==3&] (* _Harvey P. Dale_, May 25 2023 *) %Y A043523 Subsequence of A011538. %K A043523 nonn,base %O A043523 1,1 %A A043523 _Clark Kimberling_