Number of permutations of 1..n with the sequence of sums of 4 adjacent elements having exactly 3 maxima.

A179722

Number of permutations of 1..n with the sequence of sums of 4 adjacent elements having exactly 3 maxima.

Terms

    a(0) =0a(1) =2520a(2) =75600a(3) =1310400a(4) =17186400a(5) =211780800a(6) =2652249600a(7) =34995760800

External references