The LCD has a lot of pins you might want to get about 4 8 bit serial to parallel converters and try using the shiftout() command. Each number will then have a specific number of 1's or 0's in serial data. Making a long list of the numbers you want to display 1,2,3, etc and use a look-up or jump to statement.
It would be easier just to get an LCD screen that will take serial data.