Another 'new' word?

Am hereby claiming another 'new' word/phrase - 'mathARTmatical drawings'! (No results found on google!!). It's as it says on the tin - drawings created from numbers and other mathematical symbols. I know that many folk use such things to create images but most of them then seem to draw over/obliterate their original starting point. My pics incorporate the numbers as part of the final piece. In fact, I've also written (and illustrated) a couple of books that use this concept - 'Once Upon a Nine' and 'The 9 Days of Christmas'.