a(n) = Euler(n)*Fibonacci(n) - n!.

Terms

a(0) =-1a(1) =0a(2) =-1a(3) =-2a(4) =-9a(5) =-40a(6) =-232a(7) =-1504a(8) =-11235a(9) =-93056a(10) =-850145a(11) =-8429312a(12) =-89803440a(13) =-1015217152a(14) =-12019201363a(15) =-146382407680