Number of indecomposable permutations avoiding the pattern 2134.

A284717

Number of indecomposable permutations avoiding the pattern 2134.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =13a(4) =67a(5) =369a(6) =2117a(7) =12578a(8) =77163a(9) =487370a(10) =3159905a(11) =20970630a(12) =142077861a(13) =980386614a(14) =6875910589a(15) =48927234261a(16) =352688735259

External references