182717648081
domain: N
Appears in sequences
- Denominators of continued fraction convergents to sqrt(5).at n=19A001076
- a(n) = Fibonacci(6*n + 3)/2.at n=9A007805
- Denominators of continued fraction convergents to sqrt(20).at n=18A041031
- Denominators of continued fraction convergents to sqrt(45).at n=28A041077
- Denominators of continued fraction convergents to sqrt(80).at n=18A041143
- Nonprimes which are the average of two consecutive Fibonacci numbers.at n=17A071683
- a(n) = floor((Fibonacci(2*n+1)+1)/2).at n=28A087953
- Row sums of triangle A099510, so that a(n) = Sum_{k=0..n} coefficient of z^k in (1 + 2*z + z^2)^(n-[k/2]), where [k/2] is the integer floor of k/2.at n=27A099511
- Antidiagonal sums of number triangle A086645.at n=28A108479
- Expansion of (1-x)^3/(1-4x+5x^2-4x^3+x^4).at n=28A109961
- Negative of the Hankel transform of C(n) - C(n+2), where C = A000108.at n=27A138268
- Denominators of continued fraction convergents to sqrt(5/4).at n=18A153315
- Hypotenuses of primitive Pythagorean triples in A195547 and A195548.at n=27A195549