614866

Appears in sequences

• Number of labeled partitions of (n,n) into pairs (i,j).at n=6A108459
• Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n}, having exactly k blocks consisting only odd entries (0<=k<=ceiling(n/2)).at n=48A124420
• Number of partitions of the set {1,2,...,n} having no blocks that contain only odd entries.at n=12A124421
• Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n}, having exactly k blocks consisting only even entries (0<=k<=floor(n/2)).at n=42A124422
• Number of partitions of the set {1,2,...,n} having no blocks that contain only even entries.at n=12A124423