635182667816
domain: N
Appears in sequences
- Number of ways of placing n labeled balls into 9 indistinguishable boxes; word structures of length n using a 9-ary alphabet.at n=18A164863
- Number of ways to partition a set of n elements into at most n/2 disjoint subsets.at n=18A277364
- a(n) = A359107(2*n, n) = Sum_{j=0..n} Stirling2(2*n, j) = Sum_{j=0..n} A048993(2*n, j).at n=9A359355