$\displaystyle \frac{1}{\sqrt{2}-1}$\displaystyle \frac{1}{\sqrt{2}-1}

$\displaystyle \frac{\sqrt{2}}{\sqrt{2}-1}$\displaystyle \frac{\sqrt{2}}{\sqrt{2}-1}

$\displaystyle \frac{2}{\sqrt{2}-1}$\displaystyle \frac{2}{\sqrt{2}-1}

$\displaystyle \frac{3}{\sqrt{2}-1}$\displaystyle \frac{3}{\sqrt{2}-1}