1201917
domain: N
Appears in sequences
- Number of directed animals of size n (or directed n-ominoes in standard position).at n=15A005773
- Triangle read by rows: T(n,k) = the number of Dyck paths of semilength n with k DUUU's.at n=41A135308
- Transform of C(n+1,floor((n+1)/2)) by A178112.at n=28A178113
- Number of valid hook configurations of permutations of [n] that avoid the patterns 231 and 1243.at n=16A307789