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A122276 If b(n-1) + b(n-2) < n then a(n) = 0, otherwise a(n) = 1, where b(i) = A096535(i). 6

%I #7 Apr 18 2017 18:25:51

%S 1,0,0,0,0,0,1,0,0,0,1,1,0,0,0,0,0,1,1,0,0,0,0,1,0,0,1,0,0,1,0,0,1,1,

%T 0,1,1,0,0,0,0,1,1,0,0,0,1,0,0,1,1,1,0,1,1,0,0,0,0,0,1,1,0,0,1,1,0,0,

%U 0,0,1,1,0,0,1,1,1,0,0,1,0,1,1,0,0,0,1,1,0,1,0,0,1,1,1,0,1,1,0,0,0,1,0,0,1

%N If b(n-1) + b(n-2) < n then a(n) = 0, otherwise a(n) = 1, where b(i) = A096535(i).

%C Conjecture: lim {n -> infinity} x_n / y_n = 1, where x_n is the number of j <= n such that A096535(j) = A096535(j-1) + A096535(j-2) and y_n is the number of j <= n such that A096535(j) = A096535(j-1) + A096535(j-2) - j. Computational support: x_n / y_n = 0.9999917 for n = 10^9.

%H G. C. Greubel, <a href="/A122276/b122276.txt">Table of n, a(n) for n = 2..1000</a>

%F a(n) = floor((A096535(n-1)+A096535(n-2))/n)

%t f[s_] := f[s] = Append[s, Mod[s[[ -2]] + s[[ -1]], Length[s]]]; t = Nest[f, {1, 1}, 106]; s = {}; Do[AppendTo[s, If[t[[n]] + t[[n + 1]] < n + 1, 0, 1]], {n, 105}]; s (* _Robert G. Wilson v_ Sep 02 2006 *)

%o (PARI) {m=107;a=1;b=1;for(n=2,m,d=divrem(a+b,n);print1(d[1],",");a=b;b=d[2])}

%Y Cf. A096535, A122277.

%K nonn

%O 2,1

%A _Klaus Brockhaus_, Aug 29 2006

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