Number of colored set partitions of [2n] where colors of the elements of subsets are in (weakly) increasing order and exactly n colors are used.

A325889

Number of colored set partitions of [2n] where colors of the elements of subsets are in (weakly) increasing order and exactly n colors are used.

Terms

    a(0) =1a(1) =2a(2) =122a(3) =30470a(4) =19946654a(5) =27291293442

External references