Number of dissections of a polygon using strictly disjoint diagonals.

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =13a(5) =29a(6) =65a(7) =148a(8) =341a(9) =793a(10) =1860a(11) =4395a(12) =10452a(13) =24999a(14) =60097a(15) =145130a(16) =351916a(17) =856502a(18) =2091599a(19) =5123437a(20) =12585354a(21) =30995031a(22) =76516348a(23) =189310421a(24) =469335998a(25) =1165790119a(26) =2900870597a(27) =7230320746a(28) =18049387617a(29) =45123390441