Ole Husby:
How to make a Möbius basket
Ole Husby:
Inside or outside
Ole Husby:
Möbius strip and Möbius basket
Ole Husby:
USPS First-Class International box
Ole Husby:
Klein bottle
Ole Husby:
Hvor mange ludoterninger?
Ole Husby:
17x17x17=4913
Ole Husby:
Det ble bare en
Ole Husby:
3x4=12
Ole Husby:
Pytagoras
Ole Husby:
Triangle