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 A262298 #14 Nov 05 2018 17:51:18
%S A262298 13,
%T A262298 134567891011121314151617181920212223242526272829303132333435363738394041
%N A262298 Primes in A262572.
%C A262298 Three more terms are known, but are too large to show here. See A262555 for details. - _N. J. A. Sloane_, Oct 09 2015
%t A262298 Select[DeleteDuplicates[Table[FromDigits[Flatten[IntegerDigits[Complement[Range[n], {2}]]]], {n, 50}]], PrimeQ[#] & ](* _Robert Price_, Nov 05 2018 *)
%Y A262298 Cf. A089987, A262572, A262555.
%Y A262298 See A262300 for more about this problem.
%K A262298 nonn,base
%O A262298 1,1
%A A262298 _N. J. A. Sloane_, Sep 25 2015