82725domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k UUUU's starting at level 0.at n=25A135309Numbers k such that k-4, k-2, k+2 and k+4 are prime.at n=34A173037Number of 2 X 2 matrices M with all terms in {1,...,n} and permanent(M) >= n.at n=17A212240