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

A003452

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

Terms

    a(0) =2a(1) =7a(2) =15a(3) =28a(4) =45a(5) =69a(6) =98a(7) =136a(8) =180a(9) =235a(10) =297a(11) =372a(12) =455a(13) =553a(14) =660a(15) =784a(16) =918a(17) =1071a(18) =1235a(19) =1420a(20) =1617a(21) =1837a(22) =2070a(23) =2328a(24) =2600a(25) =2899a(26) =3213a(27) =3556a(28) =3915a(29) =4305

External references