I have a column with over 6000 entries and I want to =concatenate groups of 16 cells of the column into individual rows with the data field separated by a comma. i.e. a row of A1,A2,A3.....

Is there a way to =conatenate(text) a formula were it will automatically include the following 15 cells in a column after pasteing a formula in a cell, without having to assign the cells such as (A1:A16) along with the comma seperated field function