Number of nonequivalent dissections of an n-gon into n-3 polygons by nonintersecting diagonals up to rotation and reflection.

A003449

Number of nonequivalent dissections of an n-gon into n-3 polygons by nonintersecting diagonals up to rotation and reflection.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =7a(4) =24a(5) =74a(6) =259a(7) =891a(8) =3176a(9) =11326a(10) =40942a(11) =148646a(12) =543515a(13) =1996212a(14) =7367075a(15) =27294355a(16) =101501266a(17) =378701686a(18) =1417263770a(19) =5318762098a(20) =20011847548a(21) =75473144396a(22) =285267393358

External references