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 A087773 #5 Mar 30 2012 18:50:38 %S A087773 0,0,0,0,0,0,1,0,0,0,2,0,0,1,2,0,1,2,1,0,1,2,0,1,1,2,1,2,2,2,2,2,1,1, %T A087773 1,2,2,2,1,2,1,1,1,1,1,2,2,2,2,2,2,2,2,1,2,0,2,2,2,1,2,2,2,2,2,1,1,2, %U A087773 2,2,2,1,2,2,2,2,2,1,1,2,2,2,2,2,2,2,2,2,1,2,2,1,2,2,2,2,2,2,2,0,2,2,3,3,3 %N A087773 Number of common decimal digits of n and 2^n. %Y A087773 Cf. A076493, A000079. %K A087773 nonn,base %O A087773 0,11 %A A087773 _Reinhard Zumkeller_, Oct 03 2003 %E A087773 More terms from _Ray Chandler_, Oct 05 2003