#include<fstream.h>
int main()
{long s=0,n,i,j,c,v;
ifstream f("fractii.in");
ofstream g("fractii.out");
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{c=i;v=j;
while(c!=v)
{if(v>c)v-=c;
else c-=v;}
if(c==1)
s++;}
g<<s;
f.close();
g.close();
return 0;
}