One ninth of the alternating sum of the squares of the first n Fibonacci numbers with index divisible by 4.
A156093
One ninth of the alternating sum of the squares of the first n Fibonacci numbers with index divisible by 4.
Terms
- a(0) =0a(1) =-1a(2) =48a(3) =-2256a(4) =105985a(5) =-4979040a(6) =233908896a(7) =-10988739073a(8) =516236827536
External references
- oeis: A156093