Number of (12345, 13245, 21345, 23145, 31245, 32145)-avoiding permutations.

A054872

Number of (12345, 13245, 21345, 23145, 31245, 32145)-avoiding permutations.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =114a(6) =600a(7) =3372a(8) =19824a(9) =120426a(10) =749976a(11) =4762644a(12) =30723792a(13) =200778612a(14) =1326360048a(15) =8842981848a(16) =59425117152a(17) =402092408346

External references