A Fibonacci sum: a(n) = Sum_{j=0..n-1} F(j)^2*F(2*n-j), in which the F's are the Fibonacci numbers.
A254399
A Fibonacci sum: a(n) = Sum_{j=0..n-1} F(j)^2*F(2*n-j), in which the F's are the Fibonacci numbers.
Terms
- a(0) =0a(1) =2a(2) =8a(3) =41a(4) =179a(5) =794a(6) =3422a(7) =14706a(8) =62754a(9) =267179a(10) =1135079a(11) =4817276a(12) =20429252a(13) =86600786a(14) =367005092a(15) =1555075557a(16) =6588493275a(17) =27912159494a(18) =118245265874a(19) =500914535330
External references
- oeis: A254399