你这不是在累加2的倍数吗？

programme shall be like that:

s = 1 : n = 1                 or            for i = 0 to 63
for i = 1 to 63                              s = s + 2 ^ i
n = n * 2                                  next
s = s + n                                  print "s="; s
next i                                      end
print "s="; s
end

but number is too big.