98436domain: NAppears in sequencesSum_{k=2..n} min(k,n-k)*phi(k)*(n-k).at n=42A092274Number of Dyck paths of semilength n having no ascents of length 1 that start at an even level.at n=13A102406E.g.f.: Sum_{n>=0} 4^n * (exp(n*x) - 1)^n / n!.at n=4A326288