Number of multiplicity free permutations in S_n, i.e., permutations whose Stanley symmetric function is multiplicity free.

A224287

Number of multiplicity free permutations in S_n, i.e., permutations whose Stanley symmetric function is multiplicity free.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =718a(6) =4956a(7) =38180a(8) =319280a(9) =2837959

External references