Number of set partitions of {1,...,2n} into sets of size at most n.
A229228
Number of set partitions of {1,...,2n} into sets of size at most n.
Terms
- a(0) =1a(1) =1a(2) =10a(3) =166a(4) =3795a(5) =112124a(6) =4163743a(7) =190168577a(8) =10468226150a(9) =681863474058
External references
- oeis: A229228