Number of 1324-avoiding permutations of length n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =103a(6) =513a(7) =2762a(8) =15793a(9) =94776a(10) =591950a(11) =3824112a(12) =25431452a(13) =173453058a(14) =1209639642a(15) =8604450011a(16) =62300851632a(17) =458374397312