Number of nonequivalent dissections of an n-gon into (n-3) polygons by nonintersecting diagonals rooted at a cell up to rotation.

A003442

Number of nonequivalent dissections of an n-gon into (n-3) polygons by nonintersecting diagonals rooted at a cell up to rotation.

Terms

    a(0) =1a(1) =2a(2) =11a(3) =48a(4) =208a(5) =858a(6) =3507a(7) =14144a(8) =56698a(9) =226100a(10) =898942a(11) =3565920a(12) =14124496a(13) =55887930a(14) =220985795a(15) =873396480a(16) =3450940830a(17) =13633173180a(18) =53855628554a(19) =212750148000a(20) =840496068160

External references