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 A139411 #2 Mar 30 2012 17:37:44 %S A139411 227473,227474,227483,227484,239853,239854 %N A139411 Numbers n such that pi(n)=10^pi(d_1)+10^pi(d_2)+...+10^pi(d_k) where d_1d_2...d_k is the decimal expansion of n. %e A139411 pi(239854)=10^pi(2)+10^pi(3)+10^pi(9)+10^pi(8)+10^pi(5)+10^pi(4). %Y A139411 Cf. A139412. %K A139411 base,fini,full,nonn %O A139411 1,1 %A A139411 _Farideh Firoozbakht_, May 11 2008