import java.util.*;
import java.lang.*;
import java.io.*;

public class Main {
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		// 入力
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] A = new int[N];
		for(int i = 0; i < N; i++){
			A[i] = sc.nextInt();
		}
		
		// カウント
		int count = 0;
		for(int i = 0; i < N; i++){
			int a = A[i];
			for(int j = i+1; j < N; j++){
				int b = A[j];
				for(int k = j+1; k < N; k++){
					int c = A[k];
					int gcd = euclid(a,b);
					gcd = euclid(gcd,c);
					if(gcd == 1){
						count++;
					}
				}
			}
		}
		
		// 出力
		System.out.println(count);
	}

	// 最大公約数を求める関数
	public static int euclid(int a, int b){
		if(a < b){
			int tmp = a;
			a = b;
			b = tmp;
		}
		if(a % b == 0){
			return b;
		}
		
		return euclid(b, a%b);
	}

}