105240

Appears in sequences

• Triangle read by rows: T(n,c) = number of successive equalities in set partitions of n.at n=58A056857
• Number of partitions of {1...n} containing 3 pairs of consecutive integers, where each pair is counted within a block and a string of more than 2 consecutive integers are counted two at a time.at n=7A105480
• Triangular array read by rows: T(n,k) is the number of blocks of size k in all set partitions of {1,2,...,n}.at n=47A175757