Miscellany

while something;
do
        echo
        echo -n "Series $i: 1 "
        j=2
        jn=`printf %02g $j`
        while something;
        do
                echo -n "$j "
                ((j+=1))
                jn=`printf %02d $j`;
        done
        ((i+=1))
        in=`printf %02d $i`;
done