Today's mentalfloss.com Brain Game Think Thursday challenge is quick to dispense, but may take a bit to figure out. Good luck!

Identify the missing number in this sequence:

4,  26,  224,  ?,  18044,  162386, ...

Here is the ANSWER.

THE ANSWER:

2006

Where Y is the previous number, the formula rendered is:  Y x 10 - (Y + 10)

Thanks for playing! Tomorrow, it's Free-for-all Friday.