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 A193359 #11 May 13 2013 01:49:42 %S A193359 2,1,4,2,8,6,0,8,6,3,8,5,4,9,2,9,9,5,6,7,4,9,4,0,0,0,3,2,5,0,1,9,8,8, %T A193359 0,8,2,0,8,2,4,3,7,4,8,3,3,4,9,9,7,0,8,5,8,9,1,9,2,2,1,8,2,0,6,3,9,9, %U A193359 8,2,3,8,4,8,2,6,6,0,1,5,6,5,1,8,7,1,7,4,4,6,9,1,2,0,5,6,0,0,1,1 %N A193359 Decimal expansion of sum(1/floor(2^n/n),n=1..+oo). %e A193359 2.1428608638549299567494000... %o A193359 (PARI) suminf(n=1,1/(2^n\n)) \\ _Charles R Greathouse IV_, Jul 24 2011 %K A193359 nonn,cons %O A193359 1,1 %A A193359 _Yalcin Aktar_, Jul 24 2011