Number of compositions of n where there are (2*k)! sorts of part k.

A370378

Number of compositions of n where there are (2*k)! sorts of part k.

Terms

    a(0) =1a(1) =2a(2) =28a(3) =824a(4) =44080a(5) =3837536a(6) =496714432a(7) =89388391808

External references