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 A095680 #8 May 26 2024 18:18:49
%S A095680 13,113,1013,100000000000000013,10000000000000000000000013,
%T A095680 1000000000000000000000000000000000000000000000000000000000000000000000000000000013
%N A095680 13, together with primes of the form 10^k + 13 for some k >= 0.
%C A095680 The next term has 141 digits. - _Harvey P. Dale_, May 26 2024
%t A095680 Join[{13},Select[Table[FromDigits[PadRight[{1},n,0]]+13,{n,100}],PrimeQ]] (* _Harvey P. Dale_, May 26 2024 *)
%Y A095680 See A095688 for the values of k.
%Y A095680 Cf. A093011.
%K A095680 nonn
%O A095680 1,1
%A A095680 Xavier Bury (x(AT)monsieurx.com), Jul 04 2004
%E A095680 Corrected by _N. J. A. Sloane_, Dec 31 2016 at the suggestion of _Harvey P. Dale_.
%E A095680 Corrected by _Harvey P. Dale_, May 26 2024