Number of diagonal dissections of a convex (n+8)-gon into n+1 regions.

A033280

Number of diagonal dissections of a convex (n+8)-gon into n+1 regions.

Terms

    a(0) =1a(1) =27a(2) =385a(3) =4004a(4) =34398a(5) =259896a(6) =1790712a(7) =11511720a(8) =70114902a(9) =409003595a(10) =2303105805a(11) =12593413560a(12) =67173369900a(13) =350777861280

External references