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OK - I see what you're doing. I'm not familiar with the term "I hit the sack while I was blinded" - but I'm guessing it's similar to a phrase we use here in the US: "even a blind squirrel finds some...

The term after 767 is indeed 801! I don't understand your explanation however.

I get 767 for the next number in the series. But I must admit - I needed the hint!