#!/bin/bash  
if (test -z $1) ;
        then
	   read -p "Input Max Int Lines:" MAX 
else 
	MAX=$1
fi
for ((i=1;i<=MAX;i++))  
do
	for ((j=1;j<=i;j++)) 
	do
               f=$(($i-1))
	       g=$(($j-1))
	         if [ "$j" == 1 ];
	               then
	                  declare SUM_${i}_$j=1
	         else
	 	       declare  A=$[SUM_${f}_$j] 
		       declare  B=$[SUM_${f}_$g] 
		       declare  SUM_${i}_$j=`expr $A + $B`
	         fi
	       echo -n $[SUM_${i}_$j]
	       echo -en "  " 	
        done
	echo " "
done