A transform of the Fibonacci numbers.

Terms

a(0) =1a(1) =-5a(2) =21a(3) =-89a(4) =377a(5) =-1597a(6) =6765a(7) =-28657a(8) =121393a(9) =-514229a(10) =2178309a(11) =-9227465a(12) =39088169a(13) =-165580141a(14) =701408733a(15) =-2971215073a(16) =12586269025a(17) =-53316291173a(18) =225851433717a(19) =-956722026041