a(n+2)=-a(n+1)+a(n) (signed Fibonacci numbers); or Fibonacci numbers (A000045) extended to negative indices.
1, 1, 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597
2 seqfan posts
Tue Oct 25 12:26:46 CEST 2011 [seqfan] Re: Chewing an old bone