#!/bin/bash
sum=0
i=1
j=1
for i in `seq 1 8`
do
if [ $i -gt 8 ]					
then 	
break			
fi
	for j in `seq 1 $i`
	do
		sum=$[$j+$i]
		echo -e -n "${i}+${j}=${sum}\t"
		j=$[$j+1] 
	done
echo 
i=$[$i+1] 
done