1 X 1 +1 = 2
2 X 2 +2 = 6
3 X 3 +3 =12
4 X 4 +4= 20
5 X 5 +5= 30
class series
{
public static void main(String
args[])
{
int d,i,n=10;
for(i=1;i<=n;i++)
{
d=i * i + i;
System.out.print(d+”,”);
}
}
}