117631
domain: N
Appears in sequences
- Expansion of g.f. (1-sqrt(1-4*x-4*x^2))/(2*(1+x)).at n=11A052709
- Triangle in A071943 with rows reversed.at n=55A108073
- Triangle in A071945 with rows reversed.at n=55A108075
- Triangle in A071945 with rows reversed.at n=56A108075
- Triangle of Schroeder paths counted by number of diagonal steps not preceded by an east step.at n=55A108916
- Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UDUDU's (n >= 0; 0 <= k <= n-2 for n >= 2).at n=38A128753