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 A033056 #15 Jul 23 2025 05:45:05
%S A033056 1,2,3,4,6,8,11,13,16,18,21,23,30,31,32,33,34,40,41,42,43,44,55,56,57,
%T A033056 58,59,65,66,67,68,69,80,81,82,83,84,90,91,92,93,94,105,106,107,108,
%U A033056 109,115,116,117,118,119,151,153,156,158,161
%N A033056 Numbers whose base-5 representation Sum_{i=0..m} d(i)*5^i has odd d(m-i) for all odd i.
%Y A033056 Disjoint with A032955 if more than 1 digit.
%K A033056 nonn,base
%O A033056 1,2
%A A033056 _Clark Kimberling_
%E A033056 NAME corrected. - _R. J. Mathar_, Jul 23 2025