calculate USAF 1951 acuity

package main

import (
    "fmt"
    "math"
)

func main() {
    fmt.Println("This is a program to calculate acuity from USAF 1951")
    fmt.Println("test patterns.")
    
    var g float64 //the group number of the smallest resolved pattern

    fmt.Scan(&g)
    
    var e float64 //the element number of the smallest resolved pattern
    
    fmt.Scan(&e)
    
    var r float64 
    
    r = math.Exp2(g + (e - 1)/6)
    
    fmt.Println("Your result is:", r)
    
}