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Period of continued fraction representation of (sqrt(4n+1)+1)/2=sqrt(n+sqrt(n+sqrt(n+...))).
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%I #7 Mar 30 2012 17:20:36

%S 1,0,1,3,2,0,1,4,3,5,2,0,1,6,3,3,4,9,2,0,1,7,2,9,3,6,7,7,2,0,1,10,4,7,

%T 4,3,5,8,5,10,2,0,1,12,5,3,4,15,3,14,4,12,4,16,2,0,1,9,2,19,2,16,6,3,

%U 8,11,5,6,9,15,2,0,1,10,10,4,6,19,3,4,3,16,6,21,6,10,9,9,2,0,1,16,7

%N Period of continued fraction representation of (sqrt(4n+1)+1)/2=sqrt(n+sqrt(n+sqrt(n+...))).

%K nonn,easy

%O 1,4

%A _Olivier GĂ©rard_