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

A003453

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

Terms

    a(0) =1a(1) =3a(2) =6a(3) =11a(4) =17a(5) =26a(6) =36a(7) =50a(8) =65a(9) =85a(10) =106a(11) =133a(12) =161a(13) =196a(14) =232a(15) =276a(16) =321a(17) =375a(18) =430a(19) =495a(20) =561a(21) =638a(22) =716a(23) =806a(24) =897a(25) =1001a(26) =1106a(27) =1225a(28) =1345a(29) =1480

External references