-18566231264domain: ZAppears in sequencesa(n) = (64)^n*cos (nA - nB), where A, B, C are, respectively, the angles opposite sides BC, CA, AB in a triangle ABC having sidelengths |BC| = 2, |CA| = 3, |AB| = 4; ABC is the smallest integer-sided scalene triangle.at n=6A375893