What is the next number of the following sequence
3,7,13,21,?  Choose the correct choice:	A) 22	B) 31	C) 41	D) 35	E) 42
2^2-1=3   3^2-2=7   4^2-3=13   5^2-4=21   6^2-5=31   ANSWER:31
<result>B</result>
What is the next number of the following sequence
3,7,13,21,?