Number of permutations of length 2*n-1 with no local maxima in even positions.

A113583

Number of permutations of length 2*n-1 with no local maxima in even positions.

Terms

    a(0) =1a(1) =4a(2) =56a(3) =1632a(4) =81664a(5) =6241280a(6) =676506624a(7) =98709925888

External references