$_='%67s'%$/*40 '\x12\x0f\x07\x08\x0e\x04 \x01\x09'.by.z(?a..?i){|i,c|1.up(i*i){|j|$_[j%i*67-~~/ /]=c}} pr$_
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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