357919domain: NAppears in sequencesNumber of nX3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.at n=10A207237The number of vertices inside a hexagram formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=5A333116