how can i get Tdim{i}(1) non zero while starting the value of k=2:12 ?

the result is follows

Tdim{1}

ans =

         0
    0.6749
    0.6941
    0.7265
    0.7709
    0.8180
    0.8412
    0.8180
    0.7709
    0.7265
    0.6941
    0.6749

here is the main code

N=1000;
  Tdim=cell(1,N);
 
 for i=1:N
     F=zeros(12,1);
 for k=2:12
    F(k,:)=1+(Y{i}(1)).*log(Rs{i}(k))+(Y{i}(k))*((Rs{i}(k)).^(k-1)-(Rs{i}(k)).^(k-1)).*cos((k-1).*g(k));
 end
 Tdim{i}=F;
 end