The first Lucas pseudoprime L_n is for n = 705. That is, for n = 705 ==> n | L_n - 1 (L_n = (phi)^n + (-1/phi)^n: 1,3,4,7,11,17,..., where phi stands for the golden ratio) A000032 in Sloane's _EIS_; beginning at L_0 = 2. Next ? Antreas