Number of set partitions of [2n] with distinct block sizes and one of the block sizes is n.
A328156
Number of set partitions of [2n] with distinct block sizes and one of the block sizes is n.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =60a(4) =280a(5) =3780a(6) =74844a(7) =576576a(8) =6949800a(9) =110416020a(10) =3319141540a(11) =31333878576a(12) =545777101324
External references
- oeis: A328156