Four has Four Letters

Four is the only number in the English language which as as many letters as its value.

Leave your findings below and please do comment (constructively!) on the findings of others.

Here is the python code I used to track which binary sequences ended in 13 and 18:
https://www.dropbox.com/s/j40jc15u0krvrb2/binarychain.py?dl=0

145 and the Melancoil - Numberphile
https://www.youtube.com/watch?v=_DpzAvb3Vk4

Geometry of Footballs and the Cube-shaped Ball
https://www.youtube.com/watch?v=cwWBpjeyRS0

Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/
Maths book: http://makeanddo4D.com/
Nerdy maths toys: http://mathsgear.co.uk/

Видео Four has Four Letters канала Stand-up Maths