What’s special about every number from 1 to 69?
This is cool. But 57 really could use some help. Is there nothing more special about 57 than this?
= 111 in base 7.
is a 20-gonal number.
Update: actually the list goes up to 500! But they do skip a few numbers. Bonus question: what’s the first integer skipped?
(via Rebecca Blood)
