I want to reduce the size of the vertical space in matrix environment and have a result something like this

But at present I manage something like below

with the following code
$\begin{bmatrix}
00 & 08 & 10 & 18 & 20 & 28 & 30 & 38 \\
01 & 09 & 11 & 19 & 21 & 29 & 31 & 39 \\
02 & 0a & 12 & 1a & 22 & 2a & 32 & 3a \\
03 & 0b & 13 & 1b & 23 & 2b & 33 & 3b \\
04 & 0c & 14 & 1c & 24 & 2c & 34 & 3c \\
05 & 0d & 15 & 1d & 25 & 2d & 35 & 3d \\
06 & 0e & 16 & 1e & 26 & 2e & 36 & 3e \\
07 & 0f & 17 & 1f & 27 & 2f & 37 & 3f
\end{bmatrix}$
I can change the font using \mathsf{}, but other than that, how I reduce the vertical space between the rows? I did find things like array stretch to increase vertical space between rows in matrix, but not something that can decrease the space.


\renewcommand*{\arraystretch}{.5}? – Sigur Jun 06 '14 at 16:31atofshould not be set in math italics, but upright. – Heiko Oberdiek Jun 06 '14 at 19:25