Short PL/SQL block to print the characters in range [033..256]

SET serveroutput ON DECLARE  i NUMBER;  j NUMBER;  k NUMBER; BEGIN FOR i IN 2..15 LOOP  FOR j IN 1..16 LOOP  k:=i*16+j;  dbms_output.put((TO_CHAR(k,’000’)) || ‘:’ || CHR(k) || ‘ ‘ );  IF k MOD 8 = 0 THEN    dbms_output.put_line(”);   END IF;  END LOOP; […]