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 A368693 #7 Jan 12 2024 12:04:50
%S A368693 1,1,2,3,4,2,5,6,7,4,8,3,9,5,10,11,12,7,7,4,13,8,14,5,15,9,9,5,16,10,
%T A368693 17,18,19,12,20,6,12,7,21,11,22,13,13,11,23,14,24,11,25,15,15,9,23,9,
%U A368693 26,5,27,16,28,21,29,17,30,31,32,19,19,20,33,20,34,6,35,12,34,36,26,21,21,11,37,22,22,36,38,13,39
%N A368693 Lexicographically earliest infinite sequence such that a(i) = a(j) => A368698(i) = A368698(j) for all i, j >= 0.
%C A368693 Restricted growth sequence transform of A368698.
%H A368693 Antti Karttunen, <a href="/A368693/b368693.txt">Table of n, a(n) for n = 0..16384</a>
%o A368693 (PARI)
%o A368693 \\ Needs also code or data from A368698.
%o A368693 rgs_transform(invec) = { my(om = Map(), outvec = vector(length(invec)), u=1); for(i=1, length(invec), if(mapisdefined(om,invec[i]), my(pp = mapget(om, invec[i])); outvec[i] = outvec[pp] , mapput(om,invec[i],i); outvec[i] = u; u++ )); outvec; };
%o A368693 v368693 = rgs_transform(vector(1+up_to,n,A368698(n-1)));
%o A368693 A368693(n) = v368693[1+n];
%Y A368693 Cf. A005940, A344005, A368698.
%K A368693 nonn
%O A368693 0,3
%A A368693 _Antti Karttunen_, Jan 12 2024