Making an array of constant numbers is quite easy. First you have to define the name of the array by using the word 'TABLE' or 'CREATE' (which is more Forth-like). Then you specify all its elements. Note that every element is a literal expression. All elements (even the last) are terminated by the word ','. An example:
table sizes 18 , 21 , 24 , 27 , 30 , 255 ,
Please note that ',' is a word! It has to be separated by spaces on both ends.