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 A076213 #15 Apr 04 2014 01:38:29 %S A076213 1,1,1,0,1,1,1,0,1,0,1,0,1,0,1,0,1,1,1,0,1,0,0,1,0,1,0,1,0,1,0,1,1,1, %T A076213 0,1,0,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,1,0, %U A076213 1,0,1,0,1,0,1,0,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,1,0,1,0 %N A076213 2*a(n)-1 = sign(A005132(n+1)-A005132(n)). %C A076213 Characteristic function of A057165 - 1. - _M. F. Hasler_, Jun 03 2009 %H A076213 <a href="/index/Rea#Recaman">Index entries for sequences related to Recamán's sequence</a> %F A076213 Conjecture: let s(n)=sum(k=1, n, a(k)), then lim n ->infinity s(n)/n = 1/2; for any n, 2*s(n) > n; let v(n)=2*s(n)-n, then v(n)/log(n) is bounded and sum(k=1, n, v(k)) is asymptotic to c*n*log(n) with 1 < c < 3/2. %F A076213 a(n) = 1-A160351(n+1) = (A160357(n)+1)/2. - _M. F. Hasler_, Jun 03 2009 %K A076213 nonn %O A076213 0,1 %A A076213 _Benoit Cloitre_, Nov 03 2002 %E A076213 Added initial value a(0)=1. - _M. F. Hasler_, Jun 03 2009