Question

what is the logic to get the sequence of 1,-2,6,-15,31,-52....

Answer 1

Answer:

1 + 0^2 = 1

1 + 1^2 = 2

2 + 2^2 = 6

6 + 3^2 = 15

15 + 4^2 = 31

Here is your answer...

And the last number in series should be -56..

Check it once...

HOPE THIS ANSWER HELPS YOU...