310957991

Properties

Appears in sequences

• a(n) = 9*a(n-1) - a(n-2) for n > 0, a(0)=1, a(-1)=1.at n=9A070998
• L(n,n), where L is defined as in A108299.at n=9A108366
• Triangle T(n, k) = (k*ChebyshevU(n, (k+2)/2) + 2*ChebyshevT(n+1, (k+2)/2))/2.at n=34A121872
• Prime numbersat n=16813480