\x09 \x09 \x09 \x09 \x09 \x09 \x09 \x09\x09\x09\x09\x09\x09 \x09 \x09\x09 \x09 \x09 \x09\x09\x09 \x09 \x09 \x09\x09\x09 \x09 \x09 \x09 \x09 \x09 \x09
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
mark +0(0b) push +10(4b) push +0(0b) call null call null call null call null dup dup geti retr add puti putc jump +0(0b) mark null dup dup getc retr push +16(5b) mod add dup getc copy +1(1b) mul ret