2015 is the 100th anniversary of the Sierpinski triangle, first described by Wacław Sierpiński, a Polish mathematician who published 724 papers and 50 books during his lifetime! The famous triangle is easily constructed by following these steps:
- Start with an equilateral triangle.
- Divide that triangle into four equilateral triangles and remove the one in the centre.
- Repeat the same steps with the remaining triangles, dividing each one into four triangles and removing the one in the centre.