What is the nth term for 7 9 13 21 37?

Answer 1

The problem is finding the next term

7 9 13 21 37 69 133 261......... nth

the first number aka the N1 = 7, N2 = 9, N3= 13,....... N7= 133,........Nth

The first number 7 +2 = 9, which is the second number NOTE: 21=2

the second number 9 + 4 = 13 NOTE: 22=4

the third 13 + 8 = 21 NOTE: 23=8

the fourth 21 +16 = 37 NOTE: 24=16

So, the pattern is Nm+2m= the next number in the pattern

Nth = Nth-1+2th-1

By: Rodney T. Anderson