Today I came across two mathematical curios; the first is a Limerick that my dad will surely get a kick out of:

"A dozen, a gross, and a score,
Plus three times the square root of four,
Divided by seven,
Plus five times eleven,
Is nine squared and not a bit more."

(12 + 144 + 20 + 3sqrt(4)) / 7 + 5*11 = 9^2

The second is a thing called Tupper’s Self-Referential Formula. This is a formula (displayed on the page linked below) that when plotted on a graph, draws a picture of….ITSELF!!!

It’s just one of those one in a million flukes but weird nonetheless: [LINK].