Number of permutations of [n] that avoid the shuffle pattern s-k-t, where s = 132 and t = 132.
A324139
Number of permutations of [n] that avoid the shuffle pattern s-k-t, where s = 132 and t = 132.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =120a(6) =720a(7) =5020a(8) =39720a(9) =350496a(10) =3404208a(11) =36024468a(12) =412029720a(13) =5060178264a(14) =66366899712a(15) =925327730484
External references
- oeis: A324139