Identify a hidden pattern in the following series of numbers
2, 4, 7, 11, 16
This looks like part of the Lazy Caterer's sequence or n(n+1)/2 + 1.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Identify a hidden pattern in the following series of numbers

### Response:
This looks like part of the Lazy Caterer's sequence or n(n+1)/2 + 1.