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 A171041 #10 Mar 31 2017 00:57:56
%S A171041 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,3,9,97,
%T A171041 181,183,187,189,113,127,131,137,139,149,151,157,163,167,173,179,101,
%U A171041 191,193,197,199,211,223,227,229,233,239,241,251,257,263,269
%N A171041 In the sequence of prime numbers, replace all the '8' digits with '0' and vice versa.
%H A171041 Vincenzo Librandi, <a href="/A171041/b171041.txt">Table of n, a(n) for n = 1..1000</a>
%t A171041 FromDigits[IntegerDigits[#]/.{8->p, 0->q}/.{p->0, q->8}]&/@Prime[Range[100]] (* _Vincenzo Librandi_, Mar 11 2013 *)
%o A171041 (PARI) a(n)=my(v=[8,1,2,3,4,5,6,7,0,9]);subst(Pol(apply(k->v[k+1], digits(prime(n)))),'x,10) \\ _Charles R Greathouse IV_, Jul 26 2013
%K A171041 nonn,base,easy
%O A171041 1,1
%A A171041 _N. J. A. Sloane_ and _Vincenzo Librandi_, Sep 04 2010