Number of nonequivalent dissections of an n-gon into n-4 polygons by nonintersecting diagonals rooted at a cell up to rotation and reflection.

A003448

Number of nonequivalent dissections of an n-gon into n-4 polygons by nonintersecting diagonals rooted at a cell up to rotation and reflection.

Terms

    a(0) =1a(1) =3a(2) =15a(3) =81a(4) =422a(5) =2124a(6) =10223a(7) =47813a(8) =218130a(9) =977354a(10) =4315130a(11) =18833538a(12) =81424236a(13) =349303352a(14) =1488748719a(15) =6310303727a(16) =26621551418a(17) =111854042306a(18) =468309841090

External references