function cmmdc(a,b:longint):longint;
var r,d,aux:longint;
begin
if b>a then begin aux:=a; a:=b; b:=aux; end;
r:=a mod b;
while r<>0 do begin
 a:=b;
 b:=r;
 r:=a mod b;
end;
d:=b;
cmmdc:=d;
end;
var n,i,j,nr:longint;
begin
readln(n);
nr:=0;
for i:=1 to n do
  for j:=1 to n do
      if cmmdc(i,j)=1 then nr:=nr+1;
      write(nr);
      readln;
      end.