Number of set partitions of [3n] with minimal block length multiplicity equal to n.

A271715

Number of set partitions of [3n] with minimal block length multiplicity equal to n.

Terms

    a(0) =1a(1) =4a(2) =55a(3) =1540a(4) =67375a(5) =4239235a(6) =383563180a(7) =51925673800

External references