449160domain: NAppears in sequencesRow squared sums of triangle of Lucas polynomials (A034807) for n>0: Sum_{k=0..floor(n/2)} A034807(n,k)^2, with a(0)=1.at n=15A132461Number of length n+2 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=33A256817