Number of (2-14-3, 3-41-2)-avoiding permutations of size n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =88a(6) =374a(7) =1668a(8) =7744a(9) =37182a(10) =183666a(11) =929480a(12) =4803018a(13) =25274088a(14) =135132886a(15) =732779504a(16) =4023875702a(17) =22346542912a(18) =125368768090a(19) =709852110576