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 A100903 #9 Feb 19 2016 08:40:58 %S A100903 1,8,21,123,4299,6128,11760,18884,40293 %N A100903 Numbers n such that (10^n-1)^2-2 is prime. %C A100903 Next term > 70000. %H A100903 S. Harvey, <a href="http://harvey563.tripod.com/Carol_Kynea.txt">Carol and Kynea Primes</a>. %o A100903 (PARI) is(n)=ispseudoprime((10^n-1)^2-2) \\ _Charles R Greathouse IV_, Feb 19 2016 %K A100903 nonn,more %O A100903 1,2 %A A100903 _Ray Chandler_, Nov 21 2004