Within recent history mathematical formulas have specifically been used as poetic constraints. OuLiPo is the best example of mathematical forms being used for constrained literature. OuLiPo, Ouvroir de Littérature Potentielle, or Workshop of Potential
Literature, is an organization of individuals officially established, February 13th, 1961 in Europe, comprised of writers and mathematicians whose goal it is to explore alternative and potential literature, in part through the use of mathematical concepts.

One famous formula from the group, OuLiPo, Ouvroir de Littérature Potentielle, or Workshop of Potential Literature, is known as N+7 or S+7. In this method a noun
or substantive in a particular poem is replaced by the seventh word following the noun or substantive in question according to any chosen dictionary. Here is my example.

Row, Row, Row your Bobble gently down the Street, merrily, merrily, merrily, merrily, light is but a dredge. (Salie Davis, May, 2009)