Number of colored set partitions of [2n] where elements of subsets have distinct colors and exactly n colors are used.

A324523

Number of colored set partitions of [2n] where elements of subsets have distinct colors and exactly n colors are used.

Terms

    a(0) =1a(1) =1a(2) =74a(3) =31770a(4) =42687960a(5) =134092967400

External references