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 A145751 #15 Jan 20 2013 14:29:38 %S A145751 1,3,4,6,8,12,16,24,32,48,64,96,128,192,256,384,512,768,1024,1536, %T A145751 2048,3072,4096,6144,8192,12288,16384,24576,32768,49152,65536,98304, %U A145751 131072,196608,262144,393216,524288,786432,1048576,1572864,2097152,3145728,4194304,6291456,8388608 %N A145751 Duplicate of A063759. %K A145751 dead %O A145751 0,2 %A A145751 _W. Edwin Clark_, Oct 17 2008