The Polynomial f(x) = X^3 - X^2 - X -1 has one real root a,
which happens to be positive. This real number a satisfies the
following properties:
- for i = 1,2,3,4,5,6,7,8,9,10, one has {a^i} not equal to
zero
- one has
[a] = 1, [a^2] = 3, [a^3] = 6, [a^4] = 11, [a^5] = 21, [a^6] =
7, [a^7] = 71, [a^8] = 130
(for a real number x, [x] denotes the floor of x and {x}...