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 A171013 #19 Mar 31 2017 20:33:12
%S A171013 2,3,5,7,0,3,7,9,23,29,30,37,40,43,47,53,59,60,67,70,73,79,83,89,97,
%T A171013 10,13,17,19,3,27,30,37,39,49,50,57,63,67,73,79,80,90,93,97,99,200,
%U A171013 223,227,229,233,239,240,250,257,263,269,270,277,280,283,293,317
%N A171013 In the sequence of prime numbers, replace all digits '1' with '0' and vice versa.
%H A171013 Vincenzo Librandi, <a href="/A171013/b171013.txt">Table of n, a(n) for n = 1..1000</a>
%F A171013 a(n) = A222210(A000040(n)). - _M. F. Hasler_, Feb 13 2013
%t A171013 FromDigits[IntegerDigits[#]/.{1->p,0->q}/.{p->0,q->1}]&/@Prime[Range[100]] (* _Vincenzo Librandi_, Jul 06 2012 *)
%o A171013 (PARI) a(n)=my(v=[1,0,2,3,4,5,6,7,8,9]);apply(k->v[k+1],digits(prime(n))) \\ _Charles R Greathouse IV_, Jul 16 2013
%Y A171013 Cf. A171013-A171016, A175770, A171018-A171057; A222210-A222254.
%K A171013 nonn,base,easy
%O A171013 1,1
%A A171013 _N. J. A. Sloane_ and _Vincenzo Librandi_, Sep 04 2010