Live ORACLE

DECLARE
TYPE sum_multiples IS TABLE OF PLS_INTEGER INDEX BY PLS_INTEGER;
n PLS_INTEGER := 5; -- number of multiples to sum for display
sn PLS_INTEGER := 10; -- number of multiples to sum
m PLS_INTEGER := 3; -- multiple
FUNCTION get_sum_multiples(multiple IN PLS_INTEGER, num IN PLS_INTEGER)
RETURN sum_multiples IS
s sum_multiples;
BEGIN
FOR i IN 1..num LOOP
s(i) := multiple * ((i * (i + 1)) / 2) ; -- sum of multiples
END LOOP;
RETURN s;
END get_sum_multiples;
BEGIN
-- call function to retrieve the element identified by subscript (key)
DBMS_OUTPUT.PUT_LINE('Sum of the first ' || TO_CHAR(n) || ' multiples of ' ||
TO_CHAR(m) || ' is ' || TO_CHAR(get_sum_multiples (m, sn)(n)));
END;
/

Referencing an Element of an Associative Array