217224

Appears in sequences

• Number of Motzkin excursions of length n with an odd number of humps and an odd number of peaks.at n=16A325928
• Triangle read by rows: T(n,k) = number of circuits of length k in the complete undirected graph on n labeled vertices, for n >= 1 and k = 0 .. n(n-1)/2.at n=51A357887