## Silver Satellite

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PRESSany keyto see the "silver" content. (Repeat.)

The proportions of the rectangles are like 1:√2.

Intriguing properties:

1. The curvaturesin the chain are:

... 170, 30, 6, 2, 2, 6, 30, 170, ...They are all even numbers. Reducing them by 2 gives:

... 85, 15, 3, 1, 1, 3, 15, 85, ...

2. Recurrence.The sequence of curvatures follows a nonhomogeneous recurrence:b_{n+1}= 6b_{n}−b_{n-1}− 2

3. A challange:find the sequence that underlines these numbers, analogous to the Fibonacci-Lucas numbers for the golden satelite.