Task

Produce a formatted   12×12   multiplication table of the kind memorized by rote when in primary (or elementary) school.



Only print the top half triangle of products.





10  ' Multiplication Tables
20  LET N% = 12
30  FOR J% = 1 TO N% - 1
40   PRINT USING "###"; J%; 
50   PRINT " ";
60  NEXT J%
70  PRINT USING "###"; N%
80  FOR J% = 0 TO N% - 1
90   PRINT "----";
100 NEXT J%
110 PRINT "+"
120 FOR I% = 1 TO N% 
130  FOR J% = 1 TO N%
140   IF J% < I% THEN PRINT "    "; ELSE PRINT USING "###"; I% * J%;: PRINT " ";
150  NEXT J%
160  PRINT "| "; USING "##"; I%
170 NEXT I%
 