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 A133836 #5 Sep 13 2015 20:50:32
%S A133836 97,997,99991,9999991,99999999977,9999999999971,99999999999999997,
%T A133836 9999999999999999961,99999999999999999999977,
%U A133836 99999999999999999999999999973,9999999999999999999999999999973
%N A133836 Largest prime with number of decimal digits equal to n-th prime.
%F A133836 a(n)=A003618(A000040(n)). - _R. J. Mathar_, Jan 30 2008
%e A133836 97 is the largest prime with 2 digits.
%e A133836 997 is the largest prime with 3 digits.
%e A133836 99991 is the largest prime with 5 digits.
%p A133836 A003618 := proc(n) prevprime(10^n) ; end: A133836 := proc(n) A003618(ithprime(n)) ; end: for n from 1 to 13 do printf("%d,", A133836(n) ) ; od: # _R. J. Mathar_, Jan 30 2008
%Y A133836 Cf. A000040, A064490.
%K A133836 nonn,base
%O A133836 1,1
%A A133836 _Parthasarathy Nambi_, Jan 06 2008
%E A133836 More terms from _R. J. Mathar_, Jan 30 2008