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 A317203 #21 May 28 2021 11:05:30 %S A317203 3,1,3,2,3,1,3,1,3,2,3,1,3,2,3,1,3,1,3,2,3,1,3,1,3,2,3,1,3,2,3,1,3,1, %T A317203 3,2,3,1,3,2,3,1,3,1,3,2,3,1,3,1,3,2,3,1,3,2,3,1,3,1,3,2,3,1,3,1,3,2, %U A317203 3,1,3,2,3,1,3,1,3,2,3,1,3,2,3,1,3,1,3,2,3,1,3,1,3,2,3,1,3 %N A317203 Fixed under the morphism 1 -> 132, 2 -> 1, 3 -> 3, starting with 31. %C A317203 a(n) = Pi(A108103(n+2)), where Pi is the permutation Pi(1)=3, Pi(2)=2, Pi(3)=1. For a proof, see my link. - _Michel Dekking_, Dec 28 2019 %H A317203 Michel Dekking, <a href="/A317203/b317203.txt">Table of n, a(n) for n = 1..1199</a> %H A317203 Michel Dekking, <a href="/A317203/a317203_1.pdf">A317203-A108103-connection</a> %H A317203 Jacques Justin, and Giuseppe Pirillo, <a href="https://doi.org/10.1016/S0304-3975(01)00207-9">Episturmian words and episturmian morphisms</a>, Theoretical Computer Science, 276.1-2 (2002): 281-313. See Remark 3.2. %K A317203 nonn %O A317203 1,1 %A A317203 _N. J. A. Sloane_, Aug 05 2018 %E A317203 Definition amended by _Georg Fischer_, May 28 2021