623760
domain: N
Appears in sequences
- Number of circular permutations of the multiset {1,1,2,2,...,n,n} (up to rotations).at n=6A137729
- Number of distinct k-colored necklaces with n beads per color; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=38A208183
- Number of distinct 6-colored necklaces with n beads per color.at n=2A208191