Squared Squares - Numberphile
15:27
Euler Squares - Numberphile
16:38
A number NOBODY has thought of - Numberphile
12:07
Beautiful Trigonometry - Numberphile
15:22
Squaring a Doughnut
10:05
The Slightly Spooky Recamán Sequence - Numberphile
16:39
Way Bigger Than Graham's Number (Goodstein Sequence) - Numberphile
13:14
Aristotle's Wheel Paradox - To Infinity and Beyond
15:11