Number of nonequivalent dissections of a polygon into n triangles by nonintersecting diagonals rooted at a cell up to rotation.

A003441

Number of nonequivalent dissections of a polygon into n triangles by nonintersecting diagonals rooted at a cell up to rotation.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =10a(4) =30a(5) =99a(6) =335a(7) =1144a(8) =3978a(9) =14000a(10) =49742a(11) =178296a(12) =643856a(13) =2340135a(14) =8554275a(15) =31429068a(16) =115997970a(17) =429874830a(18) =1598952498a(19) =5967382200a(20) =22338765540a(21) =83859016956a(22) =315614844558

External references