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 A036233 #10 Oct 24 2020 09:13:13 %S A036233 1,1,3,1,5,3,7,1,9,5,5,3,5,7,3,1,5,9,7,20,3,20,1,3,5,20,9,1,7,3,31,5, %T A036233 3,20,31,9,5,1,3,7,20,42,31,7,9,20,5,42,1,31,3,7,53,9,31,20,3,5,7,42, %U A036233 53,1,9,64,31,42,20,53,3,1,5,9,7,64,75,31,1,42,5,20,9,53,7,3,64,86,75,20 %N A036233 Inverse Colombian function. %C A036233 a(n) is the smallest x with n in the digit summing sequence starting with x. %C A036233 Contains only self-numbers, see A003052. %H A036233 Sean A. Irvine, <a href="/A036233/b036233.txt">Table of n, a(n) for n = 1..10000</a> %H A036233 Sean A. Irvine, <a href="https://github.com/archmageirvine/joeis/blob/master/src/irvine/oeis/a036/A036233.java">Java program</a> (github) %Y A036233 Cf. A004207, A016052, A007618, A006507, A016052. %K A036233 easy,nonn,base %O A036233 1,3 %A A036233 Miklos SZABO (mike(AT)ludens.elte.hu)