Number of nonequivalent dissections of an n-gon into n-4 polygons by nonintersecting diagonals up to rotation and reflection.

A003450

Number of nonequivalent dissections of an n-gon into n-4 polygons by nonintersecting diagonals up to rotation and reflection.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =89a(5) =371a(6) =1478a(7) =6044a(8) =24302a(9) =98000a(10) =392528a(11) =1570490a(12) =6264309a(13) =24954223a(14) =99253318a(15) =394409402a(16) =1565986466a(17) =6214173156a(18) =24647935156a(19) =97732340680a(20) =387428854374

External references