7465176
domain: N
Appears in sequences
- Denominators of continued fraction convergents to sqrt(5).at n=12A001076
- a(n) = floor(Fibonacci(n)/2).at n=36A004695
- a(n) = Sum_{k=0..floor(n/4)} binomial(n-2k,2k).at n=35A005252
- a(n) = C(n-1,1) + C(n-3,3) + ... + C(n-2*m-1,2*m+1), where m = floor((n-2)/4).at n=33A024490
- a(n) = F(n) / Product_{p|n} F(p), where F(k) is k-th Fibonacci number and the p's in product are the distinct primes dividing n.at n=35A051348
- Expansion of x*(1 + x - 2*x^2) / ( 1 - 4*x^2 - x^4).at n=24A059973
- a(0) = 0, a(1) = 4, then a(n) = 18*a(n-1) - a(n-2).at n=6A060645
- Nonprimes which are the average of two consecutive Fibonacci numbers.at n=10A071683
- Ratio-determined insertion sequence I(0.264) (see the link below).at n=11A085348
- Smallest integer divisible by Fibonacci(2n) such that the second partial quotient in the continued fraction expansion of a(n)/phi is 2 (phi is the golden ratio), n >= 2.at n=7A088166
- Expansion of (1+x)/((1+x+x^2)(1-x-x^2)).at n=34A093040
- A Fibonacci convolution.at n=35A094686
- Expansion of (-1+2x+2x^2)/((1+x+x^2)(1-x-x^2)).at n=35A100887
- Negative of the Hankel transform of C(n) - C(n+2), where C = A000108.at n=16A138268
- Largest proper divisor of the Fibonacci numbers > 1.at n=33A139045
- Numerator of x(n), where x(n) = x(n-1) + x(n-2) with x(0)=0, x(1)=1/2.at n=36A167808
- a(n) = ceiling(Fibonacci(n)/2).at n=36A173173
- a(n) = (A000045(n)+A173432(n))/2.at n=35A173433
- a(n) = (A000045(n)-A173432(n))/2.at n=35A173434
- Square root of floor(A055812(n) / 5).at n=25A204521