Number of dissections of a convex n-gon by strictly disjoint diagonals so as to create no triangles.

A387224

Number of dissections of a convex n-gon by strictly disjoint diagonals so as to create no triangles.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =4a(4) =8a(5) =17a(6) =37a(7) =81a(8) =177a(9) =389a(10) =859a(11) =1905a(12) =4241a(13) =9477a(14) =21251a(15) =47806a(16) =107864a(17) =244045a(18) =553575a(19) =1258687a(20) =2868285a(21) =6549757a(22) =14985361a(23) =34347444a(24) =78860152a(25) =181347591a(26) =417653187a(27) =963234195a(28) =2224464087a(29) =5143567237

External references