Sum the powers 2n of all integers n between two given numbers

/** My Test Scala file**/
package main.scala

/**  * Created by Dinuka on 4/8/2017.  */object SumBetween extends App{
  print("Please insert start No :")
  val start = scala.io.StdIn.readInt()
  print("Please insert end No :")
  val end = scala.io.StdIn.readInt()

  def sum(start:Int,end:Int): Int ={
    var sumOfNums = 0    for (i <- start+1 until end){
      sumOfNums += i*i
    }
    sumOfNums
  }

  println(sum(start,end))
}
/**def sum(): Unit ={    print("Please insert start No :")    val start = scala.io.StdIn.readInt()    print("Please insert end No :")    val end = scala.io.StdIn.readInt()    var sumOfNums = 0    for (i <- start+1 until end){      sumOfNums += i*i    }    println(sumOfNums)  }
**/