Number of permutations of [n] where adjacent cycles differ in size.

A286072

Number of permutations of [n] where adjacent cycles differ in size.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =5a(4) =16a(5) =84a(6) =512a(7) =3572a(8) =28080a(9) =256820a(10) =2553728a(11) =28064776a(12) =337319944a(13) =4385615904a(14) =61255920936a(15) =921584068648

External references