Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What was the series number for the episode "I Forgot to Remember to Forget"?

### Inputs:
table_name: table, columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (millions)']

### Response:
SELECT MIN No. in series FROM table WHERE Title = "I Forgot to Remember to Forget"