#include<stdlib.h>
#include<math.h>

int control(float e)
{
do
{
e=e-1;
}while(e>1);
if ((e==0)||(e==1)) { return 1;}  else
{return -1;}
}
int main()
{
float n,k,j,i;
int y,r,b;
FILE *pf,*pi;				/*declarare stream (flux de date)*/
pf = fopen("fractii.in","r");
pi = fopen("fractii.out","w");
fscanf(pf,"%f",&n);
y=0;
r=n*n;
for(i=1;i<n+1;i++)
{
    for(j=1;j<n+1;j++)
    {
	for (k=2;k<n+1;k++)
	{
	if((i/k>=1)&&(j/k>=1)) {
	if ( (control(i/k)==1) && (control(j/k)==1)){

	y++;
				break;
		}
	 }
	}
    }
}
b=r-y;
fprintf(pi,"%i",b);

fclose(pf);
fclose(pi);
return 0;
}