WITH
m1 AS (SELECT ROWNUM m1 FROM dual CONNECT BY LEVEL<=40),
m2 AS (SELECT ROWNUM m2 FROM dual CONNECT BY LEVEL<=40),
m3 AS (SELECT ROWNUM m3 FROM dual CONNECT BY LEVEL<=40),
m4 AS (SELECT ROWNUM m4 FROM dual CONNECT BY LEVEL<=40),
fm AS (SELECT m1,m2,m3,m4 FROM m1,m2,m3,m4 WHERE
m1SELECT * FROM fm WHERE m2=2*m1+1 AND m3=2*(m1+m2)+1 AND
m4=2*(m1+m2+m3)+1

结果：1 3 9 27
 

砝码称重，砝码数、和、差都不固定。m2=2*m1+1 AND m3=2*(m1+m2)+1 AND
m4=2*(m1+m2+m3)+1 这个条件有待理论证明，暂时没有想出来

s2.jpg