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 A030596 #10 Dec 26 2018 11:53:47
%S A030596 1,3,1,1,1,1,1,1,2,1,5,2,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,1,1,1,1,1,2,
%T A030596 1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,2,1,1,3,1,1,1,1,2,1,1,
%U A030596 2,1,1,2,1,1,2,1,2,3,2,7,3,2,3,2,2,3,2,2,3,2
%N A030596 Length of n-th run of digit 1 in A030588.
%H A030596 Antti Karttunen, <a href="/A030596/b030596.txt">Table of n, a(n) for n = 1..20000</a>
%o A030596 (PARI)
%o A030596 up_to = 20000;
%o A030596 A030596list(up_to,d=1) = { my(v=vector(up_to),ds=List([]),o=1,j=1,rl=0,i=0); while(i<up_to,if(j>#ds,ds=digits(o,6);j=1;o+=2); if(d==ds[j],rl++,if(rl,i++; v[i] = rl; rl=0)); j++); (v); };
%o A030596 v030596 = A030596list(up_to);
%o A030596 A030596(n) = v030596[n]; \\ _Antti Karttunen_, Dec 24 2018
%Y A030596 Cf. A030588, A030597, A030598, A030599, A030600.
%K A030596 nonn,base
%O A030596 1,2
%A A030596 _Clark Kimberling_