Abstract
We investigate a variation on Pascal's triangle and approximations to Sierpinski's triangle, by considering the coefficients in the trinomial expansion . These trinomial coefficients have many properties similar to those of the binomial coefficients. We illustrate the triangle of numbers with a knitted shawl.
GRAPHICAL ABSTRACT
![](/cms/asset/d8de22b4-3795-4295-bdd4-cb13c7ffeb19/tmaa_a_2197832_uf0001_oc.jpg)
Disclosure statement
No potential conflict of interest was reported by the author(s).