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

A003446

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

Terms

    a(0) =0a(1) =1a(2) =1a(3) =2a(4) =6a(5) =16a(6) =52a(7) =170a(8) =579a(9) =1996a(10) =7021a(11) =24892a(12) =89214a(13) =321994a(14) =1170282a(15) =4277352a(16) =15715249a(17) =57999700a(18) =214939846a(19) =799478680a(20) =2983699498a(21) =11169391168a(22) =41929537871a(23) =157807451672a(24) =595340479694

External references