313666

Appears in sequences

• Number of 2Xn 0..1 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.at n=13A223013
• Number of inequivalent convex lattice polygons containing n lattice points (including points on the boundary).at n=33A371917