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

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