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Sine recurrence (Posted on 2019-01-08) Difficulty: 3 of 5
If a0 = sin2 (π/45) and an+1 = 4an(1 - an) for n >= 0, find the smallest positive integer n such that an = a0

No Solution Yet Submitted by Danish Ahmed Khan    
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re: @ DAK | Comment 2 of 6 |
(In reply to @ DAK by Ady TZIDON)

A "find in page" for the letter n does not find the symbol to which you refer in the puzzle. It is a pi.


Also if you zoom in, the pi has a completely rectangular top, as opposed to the dome top of an n plus a serif to the left.

It's unfortunate that the font used on the site does not give a wavy top and overhang to the pi.

Edited on January 8, 2019, 8:23 am
  Posted by Charlie on 2019-01-08 08:20:15

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