95524domain: NAppears in sequencesNumber of symmetrically unique Dyck paths of semilength n and height four.at n=9A291888Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384739.at n=50A384741