gistfile1.txt

#!/bin/bash

for i in {0..28};
do
    firstPageNumber=$(expr \( $i \* 16 \) + 1)
    lastPageNumber=$(expr $firstPageNumber + 15)
    dest="$(printf "%04d\n" $firstPageNumber)-$(printf "%04d\n" $lastPageNumber).pdf"

    gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH -dSAFER \
       -dFirstPage=$firstPageNumber \
       -dLastPage=$lastPageNumber \
       -sOutputFile=$dest \
       orig.pdf

done