1568397604

Appears in sequences

• a(n) = Lucas(4n) - 3, or Lucas(2n-1)*Lucas(2n+1).at n=10A081078
• a(n) = gcd(Sum_{k=1...n} L(k), Product_{j=1...n} L(j)), where L(k) is the k-th Lucas number.at n=41A239799
• a(n) = L(n)^2 - 5*(-1)^n = L(n+1)*L(n-1), where L = A000032.at n=22A292696
• Determinant of the matrix [L(j+k) + d(j,k)]_{1<=j, k<=n}, where L(n) denotes the Lucas number A000032(n), and d(j,k) is 1 or 0 according as j = k or not.at n=20A360278