how this base works: it is similar to factorial base but it is a double factorial instead. so like 1x3x5 or 2x4x6. in this case it starts with evens so ones place = 0!! = 1 and tens place = 2!! = 2 and hundreds = 4!! = 4x2 = 8, thousands = 6!! = 6x4x2 = 48, and so on
c2a
