359, 4713, 61121, 91733, _ , _ ,...........
Answer
3 5 9 ====> 3 3*2 -1 =5 5*2 -1 =9
4 7 13 ====>4 4*2 -1 =7 7*2 -1 =13
6 11 21 =====> 6 6*2 -1 =11 11*2 -1 =21
9 17 33 ====> 9 9*2 -1 =17 17*2 -1 =33
3 , 4 , 6 , 9 ,...................... Next two numbers 9+4 =13 13 +5 =18
+1 +2 +3
Next two numbers in the series
13 13*2 -1 25*2-1 ==> 132549
18 18*2 -1 35*2-1 ==> 183569
359, 4713, 61121, 91733, 132549 , 183569 ,...........
There is another way of finding the same answer proposed by some one at office.
359, 4713, 61121, 91733, 132549, 183569
3 4 6 9 | 13 18
5 7 11 17 | 25 35
9 13 21 33 | 49 69