Number of permutations of order n avoiding consecutive pattern 121'3.

A376694

Number of permutations of order n avoiding consecutive pattern 121'3.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =100a(6) =548a(7) =3482a(8) =25256a(9) =206298a(10) =1871704a(11) =18676354a(12) =203323724a(13) =2397969518a(14) =30455963576a(15) =414446765490

External references