Number of permutations of [n] with a fixed point and/or a succession.

A207819

Number of permutations of [n] with a fixed point and/or a succession.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =6a(4) =20a(5) =106a(6) =618a(7) =4358a(8) =34836a(9) =313592a(10) =3135988a(11) =34498646a(12) =414007634a(13) =5382362086a(14) =75356174332

External references