- Puzzle -

While studying the concept of square numbers, Neha came across a question that she couldn't solve by herself. Could you help her by finding the missing number below?

From the given sequence:

Consider 11 --- Square of 1 is 1. Now add 11+1+1 to get the next term i.e, 13.

Same follows for all the remaining numbers in the series.

Consider 81 --- 8 square is 64 and 1 square is 1. Now add 81+64+1 to get the next term i.e, 146.