10 DEFINT A-Z
20 FOR N=-99 TO 100
30 GOSUB 100: PRINT USING "########";L;
40 NEXT
50 END
100 L=0: F=3: Z=ABS(N)
110 IF Z<2 THEN RETURN
120 IF Z MOD 2=0 THEN L=L+N\2: Z=Z\2: GOTO 120
130 IF F>Z THEN RETURN
140 IF Z MOD F=0 THEN L=L+N\F: Z=Z\F: GOTO 140
150 F=F+2
160 GOTO 130