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  1. #Life 1.05
  2. #D Venetian blinds
  3. #D This is a finite version of the infinite p2 oscillator in which
  4. #D rows alternate full, full, empty, empty, full, full, ...  Two types
  5. #D of edges are shown, one perpendicular to the rows and one at a 45
  6. #D degree angle.  (It's easy to prove that there's no p2 edge parallel
  7. #D to the rows.)  Also shown are 3 type of corners where the edges
  8. #D meet.  This partly answers a question of John Conway's:  What's the
  9. #D maximum average density of an infinite p2 pattern, and can it be
  10. #D obtained as a limit of finite p2 patterns?  This shows that 1/2 is
  11. #D a lower bound.  Hartmut Holzwart showed that 8/13 is an upper bound.
  12. #D Dean Hickerson, drhickerson@ucdavis.edu  9/13/92
  13. #N
  14. #P -31 -36
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