10749957125domain: NAppears in sequencesNumber of independent sets of vertices in graph K_4 X C_n (n > 2).at n=16A051929a(n) = Lucas(4n) + 3, or 5*Fibonacci(2n-1)*Fibonacci(2n+1).at n=12A081076a(n) = Lucas(2*n) + 2*(-1)^n + 1.at n=23A366508