9188406

Appears in sequences

• A sum with next-to-central binomial coefficients of even order, Catalan related.at n=10A029760
• Total number of two-element anti-chains over all ordered trees on n edges.at n=12A139262
• Number of peaks at height >= 2 in all dispersed Dyck paths of length n (i.e., Motzkin paths of length n with no (1,0) steps at positive heights).at n=24A191309
• Expansion of g.f. (6 + 5*x - 20*x^2 - 12*x^3 + 12*x^4 + 3*x^5)/(1 + x - 5*x^2 - 4*x^3 + 6*x^4 + 3*x^5 - x^6).at n=24A216605