Number of permutations of 1..n with number of rises (p(i+1)>p(i)) different from number of rises in the inverse permutation.

A180388

Number of permutations of 1..n with number of rises (p(i+1)>p(i)) different from number of rises in the inverse permutation.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =24a(6) =228a(7) =2088a(8) =19732a(9) =197890a(10) =2131060a(11) =24729108a(12) =309027560a(13) =4148115048a(14) =59611031304a(15) =913915160628

External references