18674305
domain: N
Appears in sequences
- a(n) = 9th Fibonacci polynomial evaluated at 2^n.at n=3A020535
- Denominators of continued fraction convergents to sqrt(17).at n=8A041025
- Denominators of continued fraction convergents to sqrt(68).at n=8A041119
- Denominators of continued fraction convergents to sqrt(153).at n=16A041281
- Denominators of continued fraction convergents to sqrt(272).at n=8A041511
- Denominators of continued fraction convergents to sqrt(612).at n=16A042175
- Denominators of continued fraction convergents to sqrt(833).at n=14A042609
- Chebyshev sequence with Diophantine property.at n=4A078988
- Numerators of the continued fraction n+1/(n+1/...) [n times].at n=7A084845
- Triangle, read by rows, T(n, k) = Fibonacci(n, k), where Fibonacci(n, x) is the Fibonacci polynomial.at n=53A117715
- Array read by antidiagonals of a(n) = a(n-1)*k-((k-1)/(k^n)) where a(0)=1 and k=(sqrt(x^2+1)+x)^2 for integers x>=1.at n=31A188647
- Hypotenuses of primitive Pythagorean triples in A195561 and A195562.at n=12A195564
- a(n) = (1/sqrt(n^2+1)) * T_{2*n+1}(sqrt(n^2+1)) where T_{n}(x) is a Chebyshev polynomial of the first kind.at n=4A323012