Fn_2 = 0;
Fn_1 = 1;

disp(['F0 = ' num2str(Fn_2)])
disp(['F1 = ' num2str(Fn_1)])

n = 1;
while n < 49
  n = n + 1;
  F_n = Fn_2 + Fn_1;

  disp(['F' num2str(n) '=' num2str(F_n)])

  Fn_2 = Fn_1;
  Fn_1 = F_n;
end