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 A044974 #10 Jul 26 2023 03:21:04 %S A044974 94,112,118,120,284,286,292,310,338,340,346,356,358,362,366,370,372, %T A044974 382,388,390,418,436,442,444,526,580,598,604,606,854,860,862,878,880, %U A044974 886,932,934,940,958,1016,1022,1024,1040,1042,1048 %N A044974 Numbers whose base-3 representation contains exactly one 0 and four 1's. %t A044974 Select[Range[1100],DigitCount[#,3,0]==1&&DigitCount[#,3,1]==4&] (* _Harvey P. Dale_, Feb 10 2022 *) %Y A044974 Cf. A007089. %K A044974 nonn,base %O A044974 1,1 %A A044974 _Clark Kimberling_