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 A096353 #3 Oct 01 2013 17:58:01
%S A096353 4,13,45,212,1205,7754,54033,397820,3049439,24107782,195301124,
%T A096353 1613855392,13556782136,115465571163,995112789441,8663956923566,
%U A096353 76105986001922,673776966100254,6006525932517904,53878729432248978
%N A096353 Integer part of the logarithmic integral of the logarithmic integral of 10^n.
%o A096353 (PARI) \p 100 f(n) = for(x=1,n,print1(floor(Li(Li(10^x)))",")) Li(x) = { -eint1(log(1/x)) }
%K A096353 nonn
%O A096353 1,1
%A A096353 _Cino Hilliard_, Jun 30 2004