$S_{16}$
$${\rm LOG}\left(S_{16}\right)=\frac{2}{8}\pi
\left[\begin{array}{rrrrrrrrrrrrrrrr}
\bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet & \bullet\\
\bullet & 4 & 6 & 2 & 7 & 3 & 5 & 1 & \bullet & 4 & 6 & 2 & \bullet & 4 & 6 & 2 \\
\bullet & \bullet & 4 & 4 & 6 & 6 & 2 & 2 & \bullet & \bullet & 4 & 4 & \bullet & \bullet & 4 & 4 \\
\bullet & 4 & 2 & 6 & 5 & 1 & 7 & 3 & \bullet & 4 & 2 & 6 & \bullet & 4 & 2 & 6 \\
\bullet & \bullet & \bullet & \bullet & 4 & 4 & 4 & 4 & 5 & \bullet & \bullet & \bullet & 1 & 4 & 4 & 4 \\
\bullet & 4 & 6 & 2 & 3 & 7 & 1 & 5 & 5 & 4 & 6 & 2 & 1 & \bullet & 2 & 6 \\
\bullet & \bullet & 4 & 4 & 2 & 2 & 6 & 6 & 5 & \bullet & 4 & 4 & 1 & 4 & \bullet & \bullet \\
\bullet & 4 & 2 & 6 & 1 & 5 & 3 & 7 & 5 & 4 & 2 & 6 & 1 & \bullet & 6 & 2 \\
\bullet & \bullet & \bullet & 6 & \bullet & \bullet & \bullet & \bullet & 4 & 4 & 4 & 2 & 4 & 4 & 4 & 4 \\
\bullet & 4 & 6 & \bullet & 7 & 3 & 5 & 1 & 4 & \bullet & 2 & 4 & 4 & \bullet & 2 & 6 \\
\bullet & \bullet & 4 & 2 & 6 & 6 & 2 & 2 & 4 & 4 & \bullet & 6 & 4 & 4 & \bullet & \bullet \\
\bullet & 4 & 2 & 4 & 5 & 1 & 7 & 3 & 4 & \bullet & 6 & \bullet & 4 & \bullet & 6 & 2 \\
\bullet & \bullet & \bullet & 6 & 4 & 4 & 4 & 4 & 1 & 4 & 4 & 2 & 5 & \bullet & \bullet & \bullet \\
\bullet & 4 & 6 & \bullet & 3 & 7 & 1 & 5 & 1 & \bullet & 2 & 4 & 5 & 4 & 6 & 2 \\
\bullet & \bullet & 4 & 2 & 2 & 2 & 6 & 6 & 1 & 4 & \bullet & 6 & 5 & \bullet & 4 & 4 \\
\bullet & 4 & 2 & 4 & 1 & 5 & 3 & 7 & 1 & \bullet & 6 & \bullet & 5 & 4 & 2 & 6
\end{array}\right]$$