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 A138709 #4 Mar 30 2012 17:33:54 %S A138709 1,0,1,1,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,0, %T A138709 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1, %U A138709 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 %N A138709 n-th run has length n-th positive Fibonacci numbers, with digits 0 and 1 only, starting with 1. %e A138709 n ..... Run ................. Length %e A138709 .1 ..... 1 ................... 1 %e A138709 .2 ..... 0 ................... 1 %e A138709 .3 ..... 1,1 ................. 2 %e A138709 .4 ..... 0,0,0 ............... 3 %e A138709 .5 ..... 1,1,1,1,1 ........... 5 %e A138709 .6 ..... 0,0,0,0,0,0,0,0 ..... 8 %Y A138709 Cf. A000045, A057211, A138149. %K A138709 easy,nonn %O A138709 1,1 %A A138709 _Omar E. Pol_, Mar 29 2008