18743296domain: NAppears in sequencesExpansion of (-1+1/(1-4*x)^4)/(16*x); related to A038846.at n=9A036070Coefficients of power series that satisfies A(x)^2 - 4*x*A(x)^3 = 1, A(0)=1.at n=9A0785312^(n-3)n(9n^2-9n+4).at n=13A086604Number of symmetric non-crossing connected graphs on n equidistant nodes on a circle.at n=18A089073