1395840

Appears in sequences

• Triangle read by rows: T(n,k) = number of unique-valued sequences of length k, n >= 1, 1 <= k <= 2n-3, in the symmetric group S_n.at n=12A097635
• Expansion of e.g.f. 1 / (1 - log(1 + 2*x) / 2).at n=9A354237