Number of permutations that avoid the consecutive pattern 1423.

A201692

Number of permutations that avoid the consecutive pattern 1423.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =110a(6) =631a(7) =4218a(8) =32221a(9) =276896a(10) =2643883a(11) =27768955a(12) =318174363a(13) =3949415431a(14) =52794067318a(15) =756137263377

External references