func Mobius(N);
int  N, Cnt, F, K;
[Cnt:= 0;
F:= 2;  K:= 0;
repeat  if rem(N/F) = 0 then
                [Cnt:= Cnt+1;
                N:= N/F;
                K:= K+1;
                if K >= 2 then return 0;
                ]
        else    [F:= F+1;  K:= 0];
until   F > N;
return if Cnt&1 then -1 else 1;
];

int  N;
[Format(3, 0);
Text(0, "   ");
for N:= 1 to 199 do
        [RlOut(0, float(Mobius(N)));
        if rem(N/20) = 19 then CrLf(0);
        ];
]