2186871698domain: NAppears in sequencesa(n) = 3*a(n-1) + a(n-2) with a(0) = 2, a(1) = 3.at n=18A006497Numerators of continued fraction convergents to sqrt(832).at n=17A042606A Chebyshev or generalized Fibonacci sequence.at n=9A057076a(n) = 2 * T(n,(n+2)/2) where T(n,x) is a Chebyshev polynomial of the first kind.at n=9A343261