Correct. Since the first term is 24, the second term is $\displaystyle{24}\cdot\frac{{1}}{{2}}\usepackage{cmbright}\Huge\$ , which equals 12, and the third term is $\displaystyle{12}\cdot\frac{{1}}{{2}}\usepackage{cmbright}\Huge\$ , which equals 6, so the fourth term is $\displaystyle{6}\cdot\frac{{1}}{{2}}\usepackage{cmbright}\Huge\$ which equals 3.