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 A092909 #10 Aug 15 2021 12:22:43
%S A092909 2,3,5,7,101,103,107,109,203,209,301,307,401,403,407,503,509,601,607,
%T A092909 701,703,709,803,809,907,10001,10003,10007,10009,10103,10207,10301,
%U A092909 10307,10309,10409,10501,10507,10603,10607,10703,10709,10801,10901,10903,10907,10909
%N A092909 Interpolate 0's between each pair of digits of n-th prime.
%H A092909 Andrew Howroyd, <a href="/A092909/b092909.txt">Table of n, a(n) for n = 1..1000</a>
%F A092909 a(n) = A051022(A000040(n)). - _Andrew Howroyd_, Feb 12 2020
%t A092909 Table[FromDigits[Riffle[IntegerDigits[p],0]],{p,Prime[Range[50]]}] (* _Harvey P. Dale_, Aug 15 2021 *)
%o A092909 (PARI) a(n)={fromdigits(concat([[0,d] | d<-digits(prime(n))]))} \\ _Andrew Howroyd_, Feb 12 2020
%Y A092909 Cf. A051022, A092908.
%K A092909 nonn,base
%O A092909 1,1
%A A092909 _Jorge Coveiro_, Apr 15 2004
%E A092909 Name clarified and terms a(31) and beyond from _Andrew Howroyd_, Feb 12 2020