48498domain: NAppears in sequencesT(n,n-1), array T as in A047140.at n=9A047143a(0) = 2, a(1) = 5, a(n) = 4 * a(n-1) - a(n-2).at n=8A144721Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+5x+5y>0.at n=23A211627Values of x in the solutions to x^2 - 4xy + y^2 + 11 = 0, where 0 < x < y.at n=16A237250