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 A132347 #4 Feb 18 2024 11:54:30
%S A132347 1,10,100,1001,10010,100101,1001011,10010111,100101112,1001011122,
%T A132347 10010111223,100101112234,1001011122345,10010111223457,
%U A132347 100101112234579,10010111223457912,1001011122345791216,100101112234579121621
%N A132347 Concatenation of first n members of the Padovan sequence A000931.
%t A132347 Module[{nn=20,padseq},padseq=LinearRecurrence[{0,1,1},{1,0,0},nn];Table[FromDigits[ Flatten[ IntegerDigits/@Take[padseq,n]]],{n,nn}]] (* _Harvey P. Dale_, Feb 18 2024 *)
%Y A132347 Cf. A000931, A007908, A019523, A102397. See A134732 for another version.
%K A132347 base,easy,nonn
%O A132347 1,2
%A A132347 _Omar E. Pol_, Nov 10 2007