Can you represent ever series in sigma notation

Question

can you?

 

can the series 1+4+9+61+52 be represented in sigma notation 

Answer 1

can the series 1+4+9+61+52 be represented in sigma notation 

The series is made up of squared numbers with the digits reversed, 16-61, 25-52, etc.

however when you square 10, i.e. 100, you get 001=1 and you are starting all over again without a pattern. So the answer is NO.