Triangle read by rows: T(n,k)=number of Dyck paths of semilength n having k peaks at odd height.
1, 0, 1, 1, 0, 1, 1, 3, 0, 1, 3, 4, 6, 0, 1, 6, 15, 10, 10, 0, 1, 15, 36, 45, 20, 15, 0, 1, 36
1 seqfan posts
Tue Mar 8 04:27:35 CET 2011 [seqfan] Catalan triangles, polynomials and basket weaving