232792

Appears in sequences

• Number of columns with an even sum in all 2-compositions of n. A 2-composition of n is a nonnegative matrix with two rows, such that each column has at least one nonzero entry and whose entries sum up to n.at n=10A181328
• Number T(n,k) of endofunctions on [n] with cycles of k distinct lengths; triangle T(n,k), n>=0, 0<=k<=A003056(n), read by rows.at n=25A242027
• Number of endofunctions on [n] with cycles of three distinct lengths.at n=2A246284