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 A033037 #7 Nov 02 2024 15:28:39 %S A033037 1,3,5,7,9,11,13,15,17,19,21,23,37,39,41,43,45,47,61,63,65,67,69,71, %T A033037 85,87,89,91,93,95,109,111,113,115,117,119,133,135,137,139,141,143, %U A033037 157,159,161,163,165,167,181,183,185,187,189,191 %N A033037 Numbers all of whose base 12 digits are odd. %t A033037 Select[Range[200],AllTrue[IntegerDigits[#,12],OddQ]&] (* _Harvey P. Dale_, Nov 02 2024 *) %K A033037 nonn,base %O A033037 1,2 %A A033037 _Clark Kimberling_