Problem Statement

Produce a graphical or ASCII-art representation of a Sierpinski carpet of order   N.

For example, the Sierpinski carpet of order   3   should look like this: The use of the   #   character is not rigidly required for ASCII art. The important requirement is the placement of whitespace and non-whitespace characters.

Let's start with the solution:

311>*#3\>#-:#1_$:00p00g-#@_010p0>:20p10g30v
>p>40p"#"30g40g*!#v_$48*30g3%1-v^ >$55+,1v>
0 ^p03/3g03/3g04$_v#!*!-1%3g04!<^_^#- g00 <
^3g01p02:0p01_@#-g>#0,#02#:0#+g#11#g+#0:#<^