214058domain: NAppears in sequencesCoefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=22A192951a(n) = max{T(n,k), k=1..n}, where T(n,k) is the number of Dyck paths of length 2n and height k (1<=k<=n).at n=12A259885Number of Dyck paths of semilength n and height exactly 5.at n=8A289418