Number of permutations of 1..n with the sequence of sums of 9 adjacent elements having exactly 2 maxima.

A179737

Number of permutations of 1..n with the sequence of sums of 9 adjacent elements having exactly 2 maxima.

Terms

    a(0) =0a(1) =9979200a(2) =239500800a(3) =3891888000a(4) =54486432000a(5) =715134420000

External references