This number gives an alternate name for Robinson triangles, which comprise a variation of the Penrose rhomb tilings. (0[1])In this number’s base, (20[1])any number has a unique standard form that contains only the binary digits with no consecutive ones. (20[1])For n greater than one, the nth Lucas number equals this number (0[1])to the power of quantity n minus one, rounded to the nearest integer. In a regular pentagon, the ratio (20[2])between (0[1])the diagonal (20[2])and the (20[1])side length (0[1])is equal (20[1])to this (20[1])number. (20[3])This number is (20[1])the positive (*) solution (0[1])to the (10[1])equation “x-squared equals (0[1])x plus one.” (0[1])This number equals the mean (0[1])of one and the square root of five. (0[1])For (10[1])10 points, (10[3])name this number that is, (10[1])roughly, the common ratio of (10[1])the Fibonacci (10[3])sequence. (10[3])■END■ (10[8]0[2])