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 A060815 #5 Dec 05 2013 19:54:48 %S A060815 2,4,8,128,1024,2048 %N A060815 Powers of 2 with each digit a power of 2 (only digits 0,1,2,4,8 are used). %C A060815 Presumably a(6) is the last term. If a(7) exists it is greater than 2^1000000. - _Charles R Greathouse IV_, Apr 09 2012 %e A060815 a(3) = 128 = 2^7, each digit of 128 is a power of 2. %Y A060815 Cf. A130696. %K A060815 nonn,base,fini,full %O A060815 1,1 %A A060815 _Amarnath Murthy_, Apr 27 2001 %E A060815 Next term > 2^105 - Larry Reeves (larryr(AT)acm.org), May 09 2001