345946302

Appears in sequences

• a(n) = 9*a(n-1)-a(n-2); a(0)=2, a(1)=9.at n=9A056918
• a(n+1) = a(n)*(a(n)^2 - 3) with a(0) = 9.at n=2A282181
• a(n) = 2 * T(n,n/2) where T(n,x) is a Chebyshev polynomial of the first kind.at n=9A343259