clear I;
w=zeros(1,16); % 16=n+1
for i=0:2047; % 15=2^k-1
    ib=dec2bin(i,26); % 11=k
    for j=1:length(ib)
        I(j)=str2num(ib(j));
    end
    C=koder15_11(I); % odgovarajuci koder
    q=sum(C);
    w(q+1)=w(q+1)+1;
end
stem(0:15,w) % 15=n
w