Number of permutations of [n] such that the minimal cyclic distance between elements of the same cycle equals one, a(1)=1 by convention.

A277032

Number of permutations of [n] such that the minimal cyclic distance between elements of the same cycle equals one, a(1)=1 by convention.

Terms

    a(0) =1a(1) =1a(2) =5a(3) =20a(4) =109a(5) =668a(6) =4801a(7) =38894a(8) =353811a(9) =3561512a(10) =39374609a(11) =474132730a(12) =6179650125a(13) =86676293916

External references