Number of set partitions of [2n] in which the size of the last block is n.
A297924
Number of set partitions of [2n] in which the size of the last block is n.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =20a(4) =125a(5) =952a(6) =8494a(7) =86025a(8) =969862a(9) =12020580a(10) =162203607a(11) =2363458396a(12) =36930606254a(13) =615302885459
External references
- oeis: A297924