Number of convex polygons of length 2n on square lattice whose leftmost bottom vertex is strictly to the right of the rightmost top vertex.

A005769

Number of convex polygons of length 2n on square lattice whose leftmost bottom vertex is strictly to the right of the rightmost top vertex.

Terms

    a(0) =1a(1) =13a(2) =110a(3) =758a(4) =4617a(5) =25895a(6) =136949a(7) =693369a(8) =3395324a(9) =16197548a(10) =75675657a(11) =347624505a(12) =1574756959a(13) =7051383905a(14) =31266981002a(15) =137492793602a(16) =600295660953

External references