89623domain: NAppears in sequencesa(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026714.at n=6A027203Number of 4Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically.at n=7A208165Number of partitions of n into 10 distinct and relatively prime parts.at n=53A341914