One fourth of the alternating sum of the squares of the first n Fibonacci numbers with index divisible by 3.
A156091
One fourth of the alternating sum of the squares of the first n Fibonacci numbers with index divisible by 3.
Terms
- a(0) =0a(1) =-1a(2) =15a(3) =-274a(4) =4910a(5) =-88115a(6) =1581149a(7) =-28372580a(8) =509125276a(9) =-9135882405a(10) =163936757995
External references
- oeis: A156091