# Strange? Primes and Palindromes have no business being in this Place?

$$1$$

$$1$$,$$2$$ Good easy start

$$1$$,$$2$$,$$4$$ As expected

$$1$$,$$2$$,$$4$$,$$8$$ I know it is going to be easy

$$1$$,$$2$$,$$4$$,$$8$$,$$16$$ why is he giving this? I got it!

$$1$$,$$2$$,$$4$$,$$8$$,$$16$$,Prime ...oops!..why is it here?

$$1$$,$$2$$,$$4$$,$$8$$,$$16$$,Prime, Odd...sure this is odd

$$1$$,$$2$$,$$4$$,$$8$$,$$16$$,Prime,Odd,Palindrome...this sure is strange and wierd?

Maybe, oeis will help me..oh no..

Looks like I have to put my thinking cap and get a solution for those 3 missing members.

Maximal number of regions obtained by joining $$n$$ points around a circle by straight lines