Number of dissections of a convex polygon by nonintersecting diagonals into polygons with even number of sides and having a total number of n edges (sides and diagonals).
A067955
Number of dissections of a convex polygon by nonintersecting diagonals into polygons with even number of sides and having a total number of n edges (sides and diagonals).
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =3a(7) =1a(8) =8a(9) =13a(10) =15a(11) =56a(12) =79a(13) =157a(14) =399a(15) =624a(16) =1448a(17) =3061a(18) =5571a(19) =12826a(20) =25559a(21) =51608a(22) =113828a(23) =227954a(24) =482591a(25) =1031681a(26) =2117323a(27) =4542331a(28) =9591243a(29) =20119244
External references
- oeis: A067955