import java.io.BufferedReader
import java.io.InputStream
import java.io.InputStreamReader
import java.io.PrintWriter
import java.util.*

fun gcd(a:Int, b:Int):Int {
    val c = a % b
    if (c == 0) return b
    return gcd(b, c)
}

fun gcd(a:Int, b:Int, c:Int):Int {
    return gcd(gcd(a, b), c)
}

fun PrintWriter.solve(sc: FastScanner) {
    val n = sc.nextInt()
    val a = Array(n) { sc.nextInt() }
    var ans = 0
    for (i in 0 until n) {
        for (j in i + 1 until n) {
            for (k in j + 1 until n) {
                if (gcd(a[i], a[j], a[k]) == 1) {
                    ans++
                }
            }
        }
    }
    println(ans)
}

fun main() {
    val writer = PrintWriter(System.out, false)
    writer.solve(FastScanner(System.`in`))
    writer.flush()
}

class FastScanner(s: InputStream) {
    private var st = StringTokenizer("")
    private val br = BufferedReader(InputStreamReader(s))

    fun next(): String {
        while (!st.hasMoreTokens()) st = StringTokenizer(br.readLine())

        return st.nextToken()
    }

    fun nextInt() = next().toInt()
    fun nextLong() = next().toLong()
    fun nextLine() = br.readLine()
    fun nextDouble() = next().toDouble()
    fun ready() = br.ready()
}