2+3

1

6

+5

1

12

+7

1

20

+11

1

30

+13

1

42

=（2+3+5+7+11+13）+

1

6

+

1

12

+

1

20

+

1

30

+

1

42

=41+

1

2

-

1

3

+

1

3

-

1

4

+

1

4

-

1

5

+

1

5

-

1

6

+

1

6

-

1

7

=41+

1

2

-

1

7

=41

5

14

．
故答案为：41

5

14

．