I need help with the following number sequence, I'm not sure if this is strictly a mathmatical number sequence or if its based on something completely different.

-1, 0, -3, -1, 2, 61, 343

Would really appreciate any help!

Thanks

It can't be a bumber sequence

I don't think it's mathematical in nature - I've been musing on this one for some time now.

Any clues? :)

I don't thik this is a real sequence