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 A110066 #12 Apr 22 2016 12:15:43
%S A110066 2,5,40,69,586,927,1393,11411,32741,79040
%N A110066 Numbers n such that 10^n - prime(n) is prime.
%C A110066 There is no further term up to 10800.
%C A110066 a(11) > 10^5. - _Robert Price_, Feb 26 2015
%t A110066 Do[If[PrimeQ[10^n - Prime[n]], Print[n]], {n, 10800}]
%o A110066 (PARI) is(n)=ispseudoprime(10^n-prime(n)) \\ _Charles R Greathouse IV_, May 15 2013
%Y A110066 Cf. A110065, A110067.
%K A110066 more,nonn
%O A110066 1,1
%A A110066 _Farideh Firoozbakht_, Jul 12 2005
%E A110066 a(8)-a(10) from _Robert Price_, Feb 26 2015