440294400domain: NAppears in sequencesGreatest common divisor of (x^m+y^m+(x+y)^m) - (z^m+t^m+(z+t)^m) over all x,y,z,t such that x^2 + xy + y^2 = z^2 + zt + t^2 and m=2n.at n=5A238595Number of unordered pairs of self-avoiding paths with nodes that cover all vertices of a convex n-gon.at n=14A332426