Simple sql sum of series program | To find the sum of the series in sql program

SUM OF SERIES:
To find the sum of series

ALGORITHM:
Start the program.
Get the number of terms n.
Start the loop.
Compute the sum.
Increment the sum.
Exit the loop.
Output the sum.
Stop the program.

PROGRAM:
SQL> set serveroutput on
SQL> declare
2 n number(3):=&n;
3 i number(3):=1;
4 x number(3):=0;
5 begin
6 loop
7 x:=x+i;
8 exit when i=n;
9 i:=i+1;
10 end loop;
11 dbms_output.put_line('sum='x);
12 end;
13 /