Pattern Recognition - 18

Find the next two numbers in the series.

13 ,62 ,421 ,248 ,694 ,_ ,_,......


Answer

Tn=Reverse (Tn-1 * 2)

62 = Reverse (13*2)
421=Reverse (62*2)
248=Reverse (421*2)
694=Reverse (248*2)

Next two numbers will be

Reverse (694*2) => 1388 => 8831
Reverse (8831 *2)=>17662 =>26671

13 ,62 ,421 ,248 ,694 ,8831 ,26671, _, _ ,......

 
 
When I shared the same question on my office blog, some body came up with this answer. It is also a correct answer.

62x4=248x4=992x4=3968

I don't know the 'official' way to indicate reversing numbers, so just follow the number to be reversed with an R:

13R=31x2=62;
421R=124x2=248;
694R=496x2=992;
4891R=1984x2=3968

13 ,62 ,421 ,248 ,694 ,992,3968, _, _ ,......