Number of nonequivalent dissections of an n-gon into n-4 polygons by nonintersecting diagonals rooted at a cell up to rotation.

A003443

Number of nonequivalent dissections of an n-gon into n-4 polygons by nonintersecting diagonals rooted at a cell up to rotation.

Terms

    a(0) =1a(1) =3a(2) =24a(3) =150a(4) =825a(5) =4205a(6) =20384a(7) =95472a(8) =436050a(9) =1954150a(10) =8629528a(11) =37665030a(12) =162845865a(13) =698599125a(14) =2977488000a(15) =12620579140a(16) =53243068230a(17) =223707978090a(18) =936619554000

External references