Sequence Guess

Guess the sequence. The solutions is near.

Sequence: 1 1 1 1 1 1 -1 -13 71 -5543 -2361327 78533012377 -1112652735107977247

Solution
The solution is: 
-1112652735107977247 -524279826105226078349817673767
And the recurrence formula is 
 (seq[-1] * 6) *seq[-2] - (seq[-3] + 5) *seq[-4] *seq[-5] -seq[-6]
This fine program was brought to you by hakank@bonetmail.com
My other useless programs.