100 cls
110 limite = 13
120 for i = 0 to limite
130   print right$(str$(i),2);"! = ";tab (6);factorialr(i)
140 next i
150 sub factorialr(n) : 'Recursive
160   if n < 2 then
170     f = 1
180   else
190     f = n*factorialr(n-1)
200   endif
210 factorialr = f
220 end sub