Update current row from the results from previous row - response (1) by Prakash4smiling@gmail.com

readable format:
can someone help me to solve this problem with teradata update query?

Before Update:
Tablename : TEST_SCENARIO
Seq_No   NUMBER  SUM_FROM_PREV_REC
1             5                       1
  
2             8 
  
3             33 
  
4             22 
  
5             45 
  
6             23 
  
7             10 
 
After Update:
Tablename : TEST_SCENARIO
 
Seq_No NUMBER   SUM_FROM_PREV_REC   Math ( previous row SUM_FROM_PREV_REC + previous row NUMBER)
1               5             1                             
                                                           
2               8             6                              1+5
                                                           
3               33            14                             6+8
                                                           
4               22            47                            14+33
                                                           
5               45            69                            47+22
                                                           
6               23            114                            69+45
                                                           
7               10            137                            114+23