Sum up 1+4+8+13+....to n terms Share with your friends Share 2 Udbhav Singh answered this 9 View Full Answer Jayakumar.b answered this Sum up 1+4+8+13+ ....... To n terms 5 Jayakumar.b answered this Sum up 1+ 4+8 + 13+....… to n terms 2 Jayakumar.b answered this Sum up 1+4+8+13+....... to n terms -1