$\sigma \left(2\right)$

$\sigma \left(3\right)$

$\sigma \left(4\right)$

$\sigma \left(5\right)$

$\sigma \left(6\right)$

$\sigma \left(7\right)$

$\sigma \left(8\right)$

$\sigma \left(9\right)$

$\sigma \left(10\right)$

1.1059

0.5455

0.3706

0.268

0.207

0.1715

0.1488

0.1325

0.1191